257994 has 24 divisors (see below), whose sum is σ = 610272. Its totient is φ = 78120.

The previous prime is 257993. The next prime is 258019. The reversal of 257994 is 499752.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 257994.

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 in 11 ways as a sum of consecutive naturals, for example, 454 + ... + 849.

It is an arithmetic number, because the mean of its divisors is an integer number (25428).

2²⁵⁷⁹⁹⁴ is an apocalyptic number.

257994 is an abundant number, since it is smaller than the sum of its proper divisors (352278).

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

257994 is a wasteful number, since it uses less digits than its factorization.

257994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1319 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 257994 is about 507.9310976894. The cubic root of 257994 is about 63.6604741045.

The spelling of 257994 in words is "two hundred fifty-seven thousand, nine hundred ninety-four".