256849938 has 12 divisors (see below), whose sum is σ = 556508238. Its totient is φ = 85616640.

The previous prime is 256849919. The next prime is 256849949. The reversal of 256849938 is 839948652.

256849938 is a `hidden beast` number, since 2 + 568 + 49 + 9 + 38 = 666.

256849938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 199741689 + 57108249 = 14133^2 + 7557^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7134703 + ... + 7134738.

Almost surely, 2^256849938 is an apocalyptic number.

256849938 is an abundant number, since it is smaller than the sum of its proper divisors (299658300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256849938 is a wasteful number, since it uses less digits than its factorization.

256849938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14269449 (or 14269446 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 256849938 is about 16026.5385532872. The cubic root of 256849938 is about 635.6623489567.

The spelling of 256849938 in words is "two hundred fifty-six million, eight hundred forty-nine thousand, nine hundred thirty-eight".