257379764 has 12 divisors (see below), whose sum is σ = 450631104. Its totient is φ = 128628024.

The previous prime is 257379751. The next prime is 257379781. The reversal of 257379764 is 467973752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5372 + ... + 23315.

It is an arithmetic number, because the mean of its divisors is an integer number (37552592).

Almost surely, 2^257379764 is an apocalyptic number.

It is an amenable number.

257379764 is a deficient number, since it is larger than the sum of its proper divisors (193251340).

257379764 is a wasteful number, since it uses less digits than its factorization.

257379764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934 (or 30932 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 50.

The square root of 257379764 is about 16043.0596832400. The cubic root of 257379764 is about 636.0991268564.

The spelling of 257379764 in words is "two hundred fifty-seven million, three hundred seventy-nine thousand, seven hundred sixty-four".