257204432 has 10 divisors (see below), whose sum is σ = 498333618. Its totient is φ = 128602208.

The previous prime is 257204429. The next prime is 257204447. The reversal of 257204432 is 234402752.

It can be written as a sum of positive squares in only one way, i.e., 243484816 + 13719616 = 15604^2 + 3704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257204395 and 257204404.

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, 8037623 + ... + 8037654.

Almost surely, 2^257204432 is an apocalyptic number.

It is an amenable number.

257204432 is a deficient number, since it is larger than the sum of its proper divisors (241129186).

257204432 is a wasteful number, since it uses less digits than its factorization.

257204432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075285 (or 16075279 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 257204432 is about 16037.5943333157. The cubic root of 257204432 is about 635.9546530964.

The spelling of 257204432 in words is "two hundred fifty-seven million, two hundred four thousand, four hundred thirty-two".