72881164 has 6 divisors (see below), whose sum is σ = 127542044. Its totient is φ = 36440580.

The previous prime is 72881143. The next prime is 72881167. The reversal of 72881164 is 46118827.

It is not an unprimeable number, because it can be changed into a prime (72881167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9110142 + ... + 9110149.

Almost surely, 2^72881164 is an apocalyptic number.

It is an amenable number.

72881164 is a deficient number, since it is larger than the sum of its proper divisors (54660880).

72881164 is a wasteful number, since it uses less digits than its factorization.

72881164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220295 (or 18220293 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 72881164 is about 8537.0465618972. The cubic root of 72881164 is about 417.7070129271.

The spelling of 72881164 in words is "seventy-two million, eight hundred eighty-one thousand, one hundred sixty-four".