257949632 has 14 divisors (see below), whose sum is σ = 511868928. Its totient is φ = 128974784.

The previous prime is 257949631. The next prime is 257949649. The reversal of 257949632 is 236949752.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257949631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015168 + ... + 2015295.

Almost surely, 2^257949632 is an apocalyptic number.

It is an amenable number.

257949632 is a deficient number, since it is larger than the sum of its proper divisors (253919296).

257949632 is an equidigital number, since it uses as much as digits as its factorization.

257949632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030475 (or 4030465 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 257949632 is about 16060.8104403234. The cubic root of 257949632 is about 636.5682460120.

The spelling of 257949632 in words is "two hundred fifty-seven million, nine hundred forty-nine thousand, six hundred thirty-two".