72331715 has 8 divisors (see below), whose sum is σ = 86896320. Its totient is φ = 57799872.

The previous prime is 72331703. The next prime is 72331717. The reversal of 72331715 is 51713327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72331715 - 2⁸ = 72331459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72331717) 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, 3035 + ... + 12404.

It is an arithmetic number, because the mean of its divisors is an integer number (10862040).

Almost surely, 2^72331715 is an apocalyptic number.

72331715 is a deficient number, since it is larger than the sum of its proper divisors (14564605).

72331715 is a wasteful number, since it uses less digits than its factorization.

72331715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16381.

The product of its digits is 4410, while the sum is 29.

The square root of 72331715 is about 8504.8054063570. The cubic root of 72331715 is about 416.6546702324.

The spelling of 72331715 in words is "seventy-two million, three hundred thirty-one thousand, seven hundred fifteen".