72418724 has 36 divisors (see below), whose sum is σ = 147532224. Its totient is φ = 30469488.

The previous prime is 72418721. The next prime is 72418727. The reversal of 72418724 is 42781427.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72418721) and next prime (72418727).

It is not an unprimeable number, because it can be changed into a prime (72418721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97097 + ... + 97839.

Almost surely, 2^72418724 is an apocalyptic number.

It is an amenable number.

72418724 is an abundant number, since it is smaller than the sum of its proper divisors (75113500).

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

72418724 is a wasteful number, since it uses less digits than its factorization.

72418724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 811 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 72418724 is about 8509.9191535525. The cubic root of 72418724 is about 416.8216701880.

The spelling of 72418724 in words is "seventy-two million, four hundred eighteen thousand, seven hundred twenty-four".