72813704 has 32 divisors (see below), whose sum is σ = 141818040. Its totient is φ = 35020800.

The previous prime is 72813701. The next prime is 72813709. The reversal of 72813704 is 40731827.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 65577604 + 7236100 = 8098^2 + 2690^2 .

It is not an unprimeable number, because it can be changed into a prime (72813701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22424 + ... + 25464.

Almost surely, 2^72813704 is an apocalyptic number.

It is an amenable number.

72813704 is a deficient number, since it is larger than the sum of its proper divisors (69004336).

72813704 is a wasteful number, since it uses less digits than its factorization.

72813704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3157 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 72813704 is about 8533.0946320781. The cubic root of 72813704 is about 417.5780943232.

The spelling of 72813704 in words is "seventy-two million, eight hundred thirteen thousand, seven hundred four".