257352892 has 12 divisors (see below), whose sum is σ = 450509920. Its totient is φ = 128635776.

The previous prime is 257352883. The next prime is 257352913. The reversal of 257352892 is 298253752.

It is a super-2 number, since 2×257352892² = 132461022041527328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 7468 + ... + 23884.

Almost surely, 2^257352892 is an apocalyptic number.

It is an amenable number.

257352892 is a deficient number, since it is larger than the sum of its proper divisors (193157028).

257352892 is a wasteful number, since it uses less digits than its factorization.

257352892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340 (or 20338 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 257352892 is about 16042.2221652737. Note that the first 3 decimals coincide. The cubic root of 257352892 is about 636.0769885573.

The spelling of 257352892 in words is "two hundred fifty-seven million, three hundred fifty-two thousand, eight hundred ninety-two".