72322004 has 12 divisors (see below), whose sum is σ = 126690228. Its totient is φ = 36124800.

The previous prime is 72321983. The next prime is 72322007. The reversal of 72322004 is 40022327.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57729604 + 14592400 = 7598^2 + 3820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72322007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (10557519).

Almost surely, 2^72322004 is an apocalyptic number.

It is an amenable number.

72322004 is a deficient number, since it is larger than the sum of its proper divisors (54368224).

72322004 is a wasteful number, since it uses less digits than its factorization.

72322004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18106 (or 18104 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 72322004 is about 8504.2344746603. The cubic root of 72322004 is about 416.6360232042.

The spelling of 72322004 in words is "seventy-two million, three hundred twenty-two thousand, four".