257402332 has 18 divisors (see below), whose sum is σ = 495128144. Its totient is φ = 117000840.

The previous prime is 257402297. The next prime is 257402351. The reversal of 257402332 is 233204752.

It is a self number, because there is not a number n which added to its sum of digits gives 257402332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265428 + ... + 266395.

Almost surely, 2^257402332 is an apocalyptic number.

257402332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

257402332 is a deficient number, since it is larger than the sum of its proper divisors (237725812).

257402332 is a wasteful number, since it uses less digits than its factorization.

257402332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531849 (or 531836 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 257402332 is about 16043.7630249265. The cubic root of 257402332 is about 636.1177181465.

The spelling of 257402332 in words is "two hundred fifty-seven million, four hundred two thousand, three hundred thirty-two".