72577988 has 24 divisors (see below), whose sum is σ = 147897792. Its totient is φ = 30517344.

The previous prime is 72577963. The next prime is 72577991. The reversal of 72577988 is 88977527.

It is a Harshad number since it is a multiple of its sum of digits (53).

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 7 ways as a sum of consecutive naturals, for example, 22970 + ... + 25937.

It is an arithmetic number, because the mean of its divisors is an integer number (6162408).

Almost surely, 2^72577988 is an apocalyptic number.

It is an amenable number.

72577988 is an abundant number, since it is smaller than the sum of its proper divisors (75319804).

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

72577988 is a wasteful number, since it uses less digits than its factorization.

72577988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48971 (or 48969 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 53.

The square root of 72577988 is about 8519.2715651046. The cubic root of 72577988 is about 417.1270059610.

The spelling of 72577988 in words is "seventy-two million, five hundred seventy-seven thousand, nine hundred eighty-eight".