257634996 has 24 divisors (see below), whose sum is σ = 617396640. Its totient is φ = 83557152.

The previous prime is 257634953. The next prime is 257634997. The reversal of 257634996 is 699436752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257634997) 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, 289686 + ... + 290573.

It is an arithmetic number, because the mean of its divisors is an integer number (25724860).

Almost surely, 2^257634996 is an apocalyptic number.

It is an amenable number.

257634996 is an abundant number, since it is smaller than the sum of its proper divisors (359761644).

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

257634996 is a wasteful number, since it uses less digits than its factorization.

257634996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580303 (or 580301 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 51.

The square root of 257634996 is about 16051.0123045246. The cubic root of 257634996 is about 636.3093210760.

The spelling of 257634996 in words is "two hundred fifty-seven million, six hundred thirty-four thousand, nine hundred ninety-six".