72928715 has 8 divisors (see below), whose sum is σ = 88747488. Its totient is φ = 57520960.

The previous prime is 72928673. The next prime is 72928727. The reversal of 72928715 is 51782927.

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

It is not a de Polignac number, because 72928715 - 2⁶ = 72928651 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102362 + ... + 103071.

It is an arithmetic number, because the mean of its divisors is an integer number (11093436).

Almost surely, 2^72928715 is an apocalyptic number.

72928715 is a deficient number, since it is larger than the sum of its proper divisors (15818773).

72928715 is a wasteful number, since it uses less digits than its factorization.

72928715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205509.

The product of its digits is 70560, while the sum is 41.

The square root of 72928715 is about 8539.8310873225. The cubic root of 72928715 is about 417.7978368882.

The spelling of 72928715 in words is "seventy-two million, nine hundred twenty-eight thousand, seven hundred fifteen".