253660328 has 8 divisors (see below), whose sum is σ = 475613130. Its totient is φ = 126830160.

The previous prime is 253660273. The next prime is 253660339. The reversal of 253660328 is 823066352.

253660328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 197739844 + 55920484 = 14062^2 + 7478^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15853763 + ... + 15853778.

Almost surely, 2^253660328 is an apocalyptic number.

It is an amenable number.

253660328 is a deficient number, since it is larger than the sum of its proper divisors (221952802).

253660328 is a wasteful number, since it uses less digits than its factorization.

253660328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31707547 (or 31707543 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 253660328 is about 15926.7174270155. The cubic root of 253660328 is about 633.0201238624.

The spelling of 253660328 in words is "two hundred fifty-three million, six hundred sixty thousand, three hundred twenty-eight".