72040715 has 16 divisors (see below), whose sum is σ = 90732096. Its totient is φ = 54806400.

The previous prime is 72040693. The next prime is 72040721. The reversal of 72040715 is 51704027.

It is not a de Polignac number, because 72040715 - 2⁸ = 72040459 is a prime.

It is a super-2 number, since 2×72040715² = 10379729235422450, 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 15 ways as a sum of consecutive naturals, for example, 19085 + ... + 22545.

It is an arithmetic number, because the mean of its divisors is an integer number (5670756).

Almost surely, 2^72040715 is an apocalyptic number.

72040715 is a deficient number, since it is larger than the sum of its proper divisors (18691381).

72040715 is a wasteful number, since it uses less digits than its factorization.

72040715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72040715 is about 8487.6801895453. The cubic root of 72040715 is about 416.0951670679.

The spelling of 72040715 in words is "seventy-two million, forty thousand, seven hundred fifteen".