257452732 has 12 divisors (see below), whose sum is σ = 450656136. Its totient is φ = 128693840.

The previous prime is 257452721. The next prime is 257452733. The reversal of 257452732 is 237254752.

It is a junction number, because it is equal to n+sod(n) for n = 257452691 and 257452700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257452733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22482 + ... + 31942.

It is an arithmetic number, because the mean of its divisors is an integer number (37554678).

Almost surely, 2^257452732 is an apocalyptic number.

It is an amenable number.

257452732 is a deficient number, since it is larger than the sum of its proper divisors (193203404).

257452732 is a wasteful number, since it uses less digits than its factorization.

257452732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16268 (or 16266 counting only the distinct ones).

The product of its digits is 117600, while the sum is 37.

The square root of 257452732 is about 16045.3336518752. Note that the first 3 decimals coincide. The cubic root of 257452732 is about 636.1592332336.

The spelling of 257452732 in words is "two hundred fifty-seven million, four hundred fifty-two thousand, seven hundred thirty-two".