257972862 has 16 divisors (see below), whose sum is σ = 589652352. Its totient is φ = 73706520.

The previous prime is 257972857. The next prime is 257972863. The reversal of 257972862 is 268279752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257972863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071064 + ... + 3071147.

It is an arithmetic number, because the mean of its divisors is an integer number (36853272).

Almost surely, 2^257972862 is an apocalyptic number.

257972862 is an abundant number, since it is smaller than the sum of its proper divisors (331679490).

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

257972862 is a wasteful number, since it uses less digits than its factorization.

257972862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142223.

The product of its digits is 846720, while the sum is 48.

The square root of 257972862 is about 16061.5336129524. The cubic root of 257972862 is about 636.5873544407.

The spelling of 257972862 in words is "two hundred fifty-seven million, nine hundred seventy-two thousand, eight hundred sixty-two".