72764804 has 18 divisors (see below), whose sum is σ = 148128750. Its totient is φ = 31184832.

The previous prime is 72764779. The next prime is 72764807. The reversal of 72764804 is 40846727.

It can be written as a sum of positive squares in only one way, i.e., 68923204 + 3841600 = 8302^2 + 1960^2 .

It is not an unprimeable number, because it can be changed into a prime (72764807) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 185429 + ... + 185820.

It is an arithmetic number, because the mean of its divisors is an integer number (8229375).

Almost surely, 2^72764804 is an apocalyptic number.

It is an amenable number.

72764804 is an abundant number, since it is smaller than the sum of its proper divisors (75363946).

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

72764804 is a wasteful number, since it uses less digits than its factorization.

72764804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371267 (or 371258 counting only the distinct ones).

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

The square root of 72764804 is about 8530.2288363209. The cubic root of 72764804 is about 417.4845947918.

The spelling of 72764804 in words is "seventy-two million, seven hundred sixty-four thousand, eight hundred four".