257052684 has 24 divisors (see below), whose sum is σ = 685474048. Its totient is φ = 73443600.

The previous prime is 257052683. The next prime is 257052701. The reversal of 257052684 is 486250752.

It is not an unprimeable number, because it can be changed into a prime (257052683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529992 + ... + 1530159.

Almost surely, 2^257052684 is an apocalyptic number.

It is an amenable number.

257052684 is an abundant number, since it is smaller than the sum of its proper divisors (428421364).

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

257052684 is a wasteful number, since it uses less digits than its factorization.

257052684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060165 (or 3060163 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 257052684 is about 16032.8626264931. The cubic root of 257052684 is about 635.8295595652.

The spelling of 257052684 in words is "two hundred fifty-seven million, fifty-two thousand, six hundred eighty-four".