257932 has 6 divisors (see below), whose sum is σ = 451388. Its totient is φ = 128964.

The previous prime is 257921. The next prime is 257947. The reversal of 257932 is 239752.

It is a d-powerful number, because it can be written as 2⁶ + 5⁶ + 9 + 7⁶ + 3¹⁰ + 2¹⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 257932.

It is an unprimeable number.

257932 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32238 + ... + 32245.

2²⁵⁷⁹³² is an apocalyptic number.

It is an amenable number.

257932 is a deficient number, since it is larger than the sum of its proper divisors (193456).

257932 is a wasteful number, since it uses less digits than its factorization.

257932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64487 (or 64485 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 257932 is about 507.8700621222. The cubic root of 257932 is about 63.6553741595.

It can be divided in two parts, 2579 and 32, that multiplied together give a palindrome (82528).

The spelling of 257932 in words is "two hundred fifty-seven thousand, nine hundred thirty-two".