72986404 has 6 divisors (see below), whose sum is σ = 127726214. Its totient is φ = 36493200.

The previous prime is 72986401. The next prime is 72986443. The reversal of 72986404 is 40468927.

It can be written as a sum of positive squares in only one way, i.e., 72080100 + 906304 = 8490^2 + 952^2 .

It is not an unprimeable number, because it can be changed into a prime (72986401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9123297 + ... + 9123304.

Almost surely, 2^72986404 is an apocalyptic number.

It is an amenable number.

72986404 is a deficient number, since it is larger than the sum of its proper divisors (54739810).

72986404 is a wasteful number, since it uses less digits than its factorization.

72986404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18246605 (or 18246603 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 72986404 is about 8543.2080625489. The cubic root of 72986404 is about 417.9079717734.

The spelling of 72986404 in words is "seventy-two million, nine hundred eighty-six thousand, four hundred four".