72321204 has 24 divisors (see below), whose sum is σ = 169985088. Its totient is φ = 23930560.

The previous prime is 72321169. The next prime is 72321257. The reversal of 72321204 is 40212327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20352 + ... + 23639.

It is an arithmetic number, because the mean of its divisors is an integer number (7082712).

Almost surely, 2^72321204 is an apocalyptic number.

It is an amenable number.

72321204 is an abundant number, since it is smaller than the sum of its proper divisors (97663884).

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

72321204 is a wasteful number, since it uses less digits than its factorization.

72321204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135 (or 44133 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 72321204 is about 8504.1874391384. The cubic root of 72321204 is about 416.6344869726.

The spelling of 72321204 in words is "seventy-two million, three hundred twenty-one thousand, two hundred four".