315839920 has 40 divisors (see below), whose sum is σ = 801087120. Its totient is φ = 114850560.

The previous prime is 315839911. The next prime is 315839929. The reversal of 315839920 is 29938513.

It is an interprime number because it is at equal distance from previous prime (315839911) and next prime (315839929).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (315839929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178575 + ... + 180334.

It is an arithmetic number, because the mean of its divisors is an integer number (20027178).

Almost surely, 2^315839920 is an apocalyptic number.

It is an amenable number.

315839920 is an abundant number, since it is smaller than the sum of its proper divisors (485247200).

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

315839920 is a wasteful number, since it uses less digits than its factorization.

315839920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358933 (or 358927 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 315839920 is about 17771.8856624726. The cubic root of 315839920 is about 681.0134254726.

The spelling of 315839920 in words is "three hundred fifteen million, eight hundred thirty-nine thousand, nine hundred twenty".