236
CCXXXVI
11101100
The number 236 — factors and divisors
Deficient
236 = 2² × 59. It has 6 divisors, adding up to 420.
Its divisors, itself excluded, add up to less than the number.
Laid out as dots
It fits as 4 × 59. The more divisors, the closer to a square.
- Prime factors
- 2² × 59
- Divisors
- 1, 2, 4, 59, 118, 236
- Sum of divisors
- 420
- Sum without itself
- 184
- Coprime below it
- 116
- Digit sum
- 11
- Digital root
- 2
- Roman numeral
- CCXXXVI
- Binary
- 11101100
- Octal
- 354
- Hexadecimal
- EC
- Base 36
- 6K
- Bits
- 8 bits
- Collatz steps
- 34 steps · peaks at 304
- Prime before
- 233
- Prime after
- 239
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 236 a prime number?
No. It breaks down into 2² × 59.
Q. What are the divisors of 236?
1, 2, 4, 59, 118, 236 — 6 divisors in all, adding up to 420.
Q. How is 236 written in binary?
11101100, which is 8 bits. In hexadecimal it is EC.
Q. How many Collatz steps does 236 take?
It reaches 1 in 34, peaking at 304 on the way.