72310715 has 4 divisors (see below), whose sum is σ = 86772864. Its totient is φ = 57848568.

The previous prime is 72310703. The next prime is 72310723. The reversal of 72310715 is 51701327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72310715 - 2¹⁶ = 72245179 is a prime.

It is a super-2 number, since 2×72310715² = 10457679007622450, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7231067 + ... + 7231076.

It is an arithmetic number, because the mean of its divisors is an integer number (21693216).

Almost surely, 2^72310715 is an apocalyptic number.

72310715 is a deficient number, since it is larger than the sum of its proper divisors (14462149).

72310715 is a wasteful number, since it uses less digits than its factorization.

72310715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14462148.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 72310715 is about 8503.5707205856. The cubic root of 72310715 is about 416.6143440077.

The spelling of 72310715 in words is "seventy-two million, three hundred ten thousand, seven hundred fifteen".