257464 has 8 divisors (see below), whose sum is σ = 482760. Its totient is φ = 128728.

The previous prime is 257459. The next prime is 257473. The reversal of 257464 is 464752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×257464² = 132575422592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16084 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (60345).

2²⁵⁷⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

257464 is a deficient number, since it is larger than the sum of its proper divisors (225296).

257464 is a wasteful number, since it uses less digits than its factorization.

257464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32189 (or 32185 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 257464 is about 507.4091051607. The cubic root of 257464 is about 63.6168514080.

The spelling of 257464 in words is "two hundred fifty-seven thousand, four hundred sixty-four".