256900238 has 12 divisors (see below), whose sum is σ = 448264872. Its totient is φ = 110100060.

The previous prime is 256900229. The next prime is 256900253. The reversal of 256900238 is 832009652.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 256900198 and 256900207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1310618 + ... + 1310813.

It is an arithmetic number, because the mean of its divisors is an integer number (37355406).

Almost surely, 2^256900238 is an apocalyptic number.

256900238 is a deficient number, since it is larger than the sum of its proper divisors (191364634).

256900238 is a wasteful number, since it uses less digits than its factorization.

256900238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621447 (or 2621440 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 256900238 is about 16028.1077485772. The cubic root of 256900238 is about 635.7038410558.

The spelling of 256900238 in words is "two hundred fifty-six million, nine hundred thousand, two hundred thirty-eight".