72779464 has 16 divisors (see below), whose sum is σ = 136984320. Its totient is φ = 36250320.

The previous prime is 72779459. The next prime is 72779477. The reversal of 72779464 is 46497727.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15192 + ... + 19399.

It is an arithmetic number, because the mean of its divisors is an integer number (8561520).

Almost surely, 2^72779464 is an apocalyptic number.

It is an amenable number.

72779464 is a deficient number, since it is larger than the sum of its proper divisors (64204856).

72779464 is a wasteful number, since it uses less digits than its factorization.

72779464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34860 (or 34856 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The square root of 72779464 is about 8531.0880900387. The cubic root of 72779464 is about 417.5126299262.

The spelling of 72779464 in words is "seventy-two million, seven hundred seventy-nine thousand, four hundred sixty-four".