257864036 has 12 divisors (see below), whose sum is σ = 452734128. Its totient is φ = 128511432.

The previous prime is 257864023. The next prime is 257864053. The reversal of 257864036 is 630468752.

It is a happy number.

It is a super-2 number, since 2×257864036² = 132987722124418592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257863984 and 257864002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103766 + ... + 106221.

It is an arithmetic number, because the mean of its divisors is an integer number (37727844).

Almost surely, 2^257864036 is an apocalyptic number.

It is an amenable number.

257864036 is a deficient number, since it is larger than the sum of its proper divisors (194870092).

257864036 is a wasteful number, since it uses less digits than its factorization.

257864036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210298 (or 210296 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 257864036 is about 16058.1454720027. The cubic root of 257864036 is about 636.4978269367.

The spelling of 257864036 in words is "two hundred fifty-seven million, eight hundred sixty-four thousand, thirty-six".