315730072 has 16 divisors (see below), whose sum is σ = 676564560. Its totient is φ = 135312864.

The previous prime is 315730031. The next prime is 315730073. The reversal of 315730072 is 270037513.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 315730072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315730073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818963 + ... + 2819074.

It is an arithmetic number, because the mean of its divisors is an integer number (42285285).

Almost surely, 2^315730072 is an apocalyptic number.

It is an amenable number.

315730072 is an abundant number, since it is smaller than the sum of its proper divisors (360834488).

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

315730072 is a wasteful number, since it uses less digits than its factorization.

315730072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638050 (or 5638046 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 315730072 is about 17768.7948944209. The cubic root of 315730072 is about 680.9344649693.

Adding to 315730072 its reverse (270037513), we get a palindrome (585767585).

The spelling of 315730072 in words is "three hundred fifteen million, seven hundred thirty thousand, seventy-two".