72239408 has 20 divisors (see below), whose sum is σ = 140119008. Its totient is φ = 36079680.

The previous prime is 72239381. The next prime is 72239411. The reversal of 72239408 is 80493227.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16985 + ... + 20807.

Almost surely, 2^72239408 is an apocalyptic number.

It is an amenable number.

72239408 is a deficient number, since it is larger than the sum of its proper divisors (67879600).

72239408 is a wasteful number, since it uses less digits than its factorization.

72239408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 72239408 is about 8499.3769183394. The cubic root of 72239408 is about 416.4773551376.

The spelling of 72239408 in words is "seventy-two million, two hundred thirty-nine thousand, four hundred eight".