72656118 has 12 divisors (see below), whose sum is σ = 157421628. Its totient is φ = 24218700.

The previous prime is 72656071. The next prime is 72656173. The reversal of 72656118 is 81165627.

It is a super-2 number, since 2×72656118² = 10557822965659848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2018208 + ... + 2018243.

It is an arithmetic number, because the mean of its divisors is an integer number (13118469).

Almost surely, 2^72656118 is an apocalyptic number.

72656118 is an abundant number, since it is smaller than the sum of its proper divisors (84765510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72656118 is a wasteful number, since it uses less digits than its factorization.

72656118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036459 (or 4036456 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 72656118 is about 8523.8558176450. The cubic root of 72656118 is about 417.2766309666.

The spelling of 72656118 in words is "seventy-two million, six hundred fifty-six thousand, one hundred eighteen".