72118115 has 8 divisors (see below), whose sum is σ = 87060960. Its totient is φ = 57348352.

The previous prime is 72118103. The next prime is 72118147. The reversal of 72118115 is 51181127.

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 72118115 - 2¹² = 72114019 is a prime.

It is a super-2 number, since 2×72118115² = 10402045022306450, which contains 22 as substring.

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, 42350 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (10882620).

Almost surely, 2^72118115 is an apocalyptic number.

72118115 is a deficient number, since it is larger than the sum of its proper divisors (14942845).

72118115 is a wasteful number, since it uses less digits than its factorization.

72118115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86541.

The product of its digits is 560, while the sum is 26.

The square root of 72118115 is about 8492.2385152562. The cubic root of 72118115 is about 416.2441302337.

The spelling of 72118115 in words is "seventy-two million, one hundred eighteen thousand, one hundred fifteen".