257996 has 6 divisors (see below), whose sum is σ = 451500. Its totient is φ = 128996.

The previous prime is 257993. The next prime is 258019. The reversal of 257996 is 699752.

257996 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 257996.

It is not an unprimeable number, because it can be changed into a prime (257993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32246 + ... + 32253.

It is an arithmetic number, because the mean of its divisors is an integer number (75250).

2²⁵⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

257996 is a deficient number, since it is larger than the sum of its proper divisors (193504).

257996 is a wasteful number, since it uses less digits than its factorization.

257996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64503 (or 64501 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 257996 is about 507.9330664566. The cubic root of 257996 is about 63.6606386052.

The spelling of 257996 in words is "two hundred fifty-seven thousand, nine hundred ninety-six".