72118715 has 8 divisors (see below), whose sum is σ = 86598528. Its totient is φ = 57657600.

The previous prime is 72118693. The next prime is 72118729. The reversal of 72118715 is 51781127.

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

It is not a de Polignac number, because 72118715 - 2¹⁰ = 72117691 is a prime.

It is a super-2 number, since 2×72118715² = 10402218106502450, which contains 22 as substring.

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, 6059 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (10824816).

Almost surely, 2^72118715 is an apocalyptic number.

72118715 is a deficient number, since it is larger than the sum of its proper divisors (14479813).

72118715 is a wasteful number, since it uses less digits than its factorization.

72118715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349.

The product of its digits is 3920, while the sum is 32.

The square root of 72118715 is about 8492.2738415574. The cubic root of 72118715 is about 416.2452845705.

The spelling of 72118715 in words is "seventy-two million, one hundred eighteen thousand, seven hundred fifteen".