315564640 has 48 divisors (see below), whose sum is σ = 756674352. Its totient is φ = 124337664.

The previous prime is 315564617. The next prime is 315564671. The reversal of 315564640 is 46465513.

It is a junction number, because it is equal to n+sod(n) for n = 315564596 and 315564605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999 + ... + 25438.

It is an arithmetic number, because the mean of its divisors is an integer number (15764049).

Almost surely, 2^315564640 is an apocalyptic number.

It is an amenable number.

315564640 is an abundant number, since it is smaller than the sum of its proper divisors (441109712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315564640 is a wasteful number, since it uses less digits than its factorization.

315564640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29519 (or 29511 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 315564640 is about 17764.1391573023. The cubic root of 315564640 is about 680.8155152284.

The spelling of 315564640 in words is "three hundred fifteen million, five hundred sixty-four thousand, six hundred forty".