256156233 has 16 divisors (see below), whose sum is σ = 368289600. Its totient is φ = 157835520.

The previous prime is 256156211. The next prime is 256156237. The reversal of 256156233 is 332651652.

It is not a de Polignac number, because 256156233 - 2⁹ = 256155721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256156194 and 256156203.

It is not an unprimeable number, because it can be changed into a prime (256156237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52468 + ... + 57141.

It is an arithmetic number, because the mean of its divisors is an integer number (23018100).

Almost surely, 2^256156233 is an apocalyptic number.

It is an amenable number.

256156233 is a deficient number, since it is larger than the sum of its proper divisors (112133367).

256156233 is a wasteful number, since it uses less digits than its factorization.

256156233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109672.

The product of its digits is 32400, while the sum is 33.

The square root of 256156233 is about 16004.8815365813. The cubic root of 256156233 is about 635.0895634928.

The spelling of 256156233 in words is "two hundred fifty-six million, one hundred fifty-six thousand, two hundred thirty-three".