72764408 has 8 divisors (see below), whose sum is σ = 136433280. Its totient is φ = 36382200.

The previous prime is 72764401. The next prime is 72764431. The reversal of 72764408 is 80446727.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72764401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4547768 + ... + 4547783.

It is an arithmetic number, because the mean of its divisors is an integer number (17054160).

Almost surely, 2^72764408 is an apocalyptic number.

It is an amenable number.

72764408 is a deficient number, since it is larger than the sum of its proper divisors (63668872).

72764408 is a wasteful number, since it uses less digits than its factorization.

72764408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095557 (or 9095553 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 72764408 is about 8530.2056247197. The cubic root of 72764408 is about 417.4838374467.

The spelling of 72764408 in words is "seventy-two million, seven hundred sixty-four thousand, four hundred eight".