72004372 has 12 divisors (see below), whose sum is σ = 137462976. Its totient is φ = 32729240.

The previous prime is 72004349. The next prime is 72004393. The reversal of 72004372 is 27340027.

It is a super-2 number, since 2×72004372² = 10369259174228768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818188 + ... + 818275.

It is an arithmetic number, because the mean of its divisors is an integer number (11455248).

Almost surely, 2^72004372 is an apocalyptic number.

It is an amenable number.

72004372 is a deficient number, since it is larger than the sum of its proper divisors (65458604).

72004372 is a wasteful number, since it uses less digits than its factorization.

72004372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636478 (or 1636476 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72004372 is about 8485.5389928984. The cubic root of 72004372 is about 416.0251849274.

Adding to 72004372 its reverse (27340027), we get a palindrome (99344399).

The spelling of 72004372 in words is "seventy-two million, four thousand, three hundred seventy-two".