72858404 has 6 divisors (see below), whose sum is σ = 127502214. Its totient is φ = 36429200.

The previous prime is 72858391. The next prime is 72858421. The reversal of 72858404 is 40485827.

It can be written as a sum of positive squares in only one way, i.e., 61622500 + 11235904 = 7850^2 + 3352^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9107297 + ... + 9107304.

It is an arithmetic number, because the mean of its divisors is an integer number (21250369).

Almost surely, 2^72858404 is an apocalyptic number.

It is an amenable number.

72858404 is a deficient number, since it is larger than the sum of its proper divisors (54643810).

72858404 is a wasteful number, since it uses less digits than its factorization.

72858404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18214605 (or 18214603 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 72858404 is about 8535.7134441123. The cubic root of 72858404 is about 417.6635266044.

The spelling of 72858404 in words is "seventy-two million, eight hundred fifty-eight thousand, four hundred four".