72679400 has 24 divisors (see below), whose sum is σ = 168980070. Its totient is φ = 29071680.

The previous prime is 72679391. The next prime is 72679421. The reversal of 72679400 is 497627.

It can be written as a sum of positive squares in 3 ways, for example, as 35688676 + 36990724 = 5974^2 + 6082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181499 + ... + 181898.

Almost surely, 2^72679400 is an apocalyptic number.

It is an amenable number.

72679400 is an abundant number, since it is smaller than the sum of its proper divisors (96300670).

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

72679400 is a wasteful number, since it uses less digits than its factorization.

72679400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363413 (or 363404 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 72679400 is about 8525.2214047496. The cubic root of 72679400 is about 417.3211970553.

The spelling of 72679400 in words is "seventy-two million, six hundred seventy-nine thousand, four hundred".