257288632 has 8 divisors (see below), whose sum is σ = 482416200. Its totient is φ = 128644312.

The previous prime is 257288627. The next prime is 257288687. The reversal of 257288632 is 236882752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080532 + ... + 16080547.

It is an arithmetic number, because the mean of its divisors is an integer number (60302025).

Almost surely, 2^257288632 is an apocalyptic number.

It is an amenable number.

257288632 is a deficient number, since it is larger than the sum of its proper divisors (225127568).

257288632 is a wasteful number, since it uses less digits than its factorization.

257288632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32161085 (or 32161081 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 257288632 is about 16040.2192004972. The cubic root of 257288632 is about 636.0240421802.

It can be divided in two parts, 2572 and 88632, that added together give a square (91204 = 302²).

The spelling of 257288632 in words is "two hundred fifty-seven million, two hundred eighty-eight thousand, six hundred thirty-two".