72918885 has 16 divisors (see below), whose sum is σ = 125645184. Its totient is φ = 35898432.

The previous prime is 72918829. The next prime is 72918893. The reversal of 72918885 is 58881927.

It is not a de Polignac number, because 72918885 - 2⁶ = 72918821 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 186777 + ... + 187166.

It is an arithmetic number, because the mean of its divisors is an integer number (7852824).

Almost surely, 2^72918885 is an apocalyptic number.

It is an amenable number.

72918885 is a deficient number, since it is larger than the sum of its proper divisors (52726299).

72918885 is a wasteful number, since it uses less digits than its factorization.

72918885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373964.

The product of its digits is 322560, while the sum is 48.

The square root of 72918885 is about 8539.2555296115. The cubic root of 72918885 is about 417.7790645054.

The spelling of 72918885 in words is "seventy-two million, nine hundred eighteen thousand, eight hundred eighty-five".