150
CL
10010110
The number 150 — factors and divisors
Abundant
150 = 2 × 3 × 5². It has 12 divisors, adding up to 372.
Its divisors, itself excluded, add up to more than the number.
Laid out as dots
It fits as 10 × 15. The more divisors, the closer to a square.
- Prime factors
- 2 × 3 × 5²
- Divisors
- 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
- Sum of divisors
- 372
- Sum without itself
- 222
- Coprime below it
- 40
- Digit sum
- 6
- Digital root
- 6
- Roman numeral
- CL
- Binary
- 10010110
- Octal
- 226
- Hexadecimal
- 96
- Base 36
- 46
- Bits
- 8 bits
- Collatz steps
- 15 steps · peaks at 340
- Prime before
- 149
- Prime after
- 151
The grid
Ten per row, twenty rows. The filled cells are primes — you can see the multiples of 2 and 5 drop out in columns.
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Numbers either side
How to read this
- The prime factors are what the number is made of. The count and sum of divisors both follow from them.
- Add the divisors, take the number away, and you get perfect, abundant or deficient.
- The length of the binary form is the bit count. 255 taking eight digits is what a byte is.
- Collatz: halve it if even, triple it and add one if odd. The count is how many moves reach 1.
Frequently asked questions
Q. Is 150 a prime number?
No. It breaks down into 2 × 3 × 5².
Q. What are the divisors of 150?
1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150 — 12 divisors in all, adding up to 372.
Q. How is 150 written in binary?
10010110, which is 8 bits. In hexadecimal it is 96.
Q. How many Collatz steps does 150 take?
It reaches 1 in 15, peaking at 340 on the way.