72328615 has 8 divisors (see below), whose sum is σ = 88217568. Its totient is φ = 56914080.

The previous prime is 72328601. The next prime is 72328621. The reversal of 72328615 is 51682327.

It is a happy number.

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

It is not a de Polignac number, because 72328615 - 2⁹ = 72328103 is a prime.

It is a Duffinian number.

It is a congruent 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, 118267 + ... + 118876.

It is an arithmetic number, because the mean of its divisors is an integer number (11027196).

Almost surely, 2^72328615 is an apocalyptic number.

72328615 is a deficient number, since it is larger than the sum of its proper divisors (15888953).

72328615 is a wasteful number, since it uses less digits than its factorization.

72328615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237209.

The product of its digits is 20160, while the sum is 34.

The square root of 72328615 is about 8504.6231544966. The cubic root of 72328615 is about 416.6487178046.

The spelling of 72328615 in words is "seventy-two million, three hundred twenty-eight thousand, six hundred fifteen".