315222720 has 56 divisors (see below), whose sum is σ = 1000835184. Its totient is φ = 84059136.

The previous prime is 315222703. The next prime is 315222727. The reversal of 315222720 is 27222513.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (315222727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163219 + ... + 165138.

Almost surely, 2^315222720 is an apocalyptic number.

315222720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315222720 is an abundant number, since it is smaller than the sum of its proper divisors (685612464).

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

315222720 is a wasteful number, since it uses less digits than its factorization.

315222720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328377 (or 328367 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 315222720 is about 17754.5126657985. The cubic root of 315222720 is about 680.5695343870.

The spelling of 315222720 in words is "three hundred fifteen million, two hundred twenty-two thousand, seven hundred twenty".