257947338 has 32 divisors (see below), whose sum is σ = 564615360. Its totient is φ = 77912960.

The previous prime is 257947321. The next prime is 257947379. The reversal of 257947338 is 833749752.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14758 + ... + 27086.

It is an arithmetic number, because the mean of its divisors is an integer number (17644230).

Almost surely, 2^257947338 is an apocalyptic number.

257947338 is an abundant number, since it is smaller than the sum of its proper divisors (306668022).

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

257947338 is a wasteful number, since it uses less digits than its factorization.

257947338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662.

The product of its digits is 1270080, while the sum is 48.

The square root of 257947338 is about 16060.7390240923. The cubic root of 257947338 is about 636.5663589616.

The spelling of 257947338 in words is "two hundred fifty-seven million, nine hundred forty-seven thousand, three hundred thirty-eight".