257204072 has 16 divisors (see below), whose sum is σ = 482662500. Its totient is φ = 128494080.

The previous prime is 257204063. The next prime is 257204093. The reversal of 257204072 is 270402752.

It can be written as a sum of positive squares in 2 ways, for example, as 256192036 + 1012036 = 16006^2 + 1006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2879 + ... + 22862.

Almost surely, 2^257204072 is an apocalyptic number.

It is an amenable number.

257204072 is a deficient number, since it is larger than the sum of its proper divisors (225458428).

257204072 is a wasteful number, since it uses less digits than its factorization.

257204072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26996 (or 26992 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 257204072 is about 16037.5831096833. The cubic root of 257204072 is about 635.9543563884.

It can be divided in two parts, 25720 and 4072, that added together give a palindrome (29792).

The spelling of 257204072 in words is "two hundred fifty-seven million, two hundred four thousand, seventy-two".