72385724 has 12 divisors (see below), whose sum is σ = 126930384. Its totient is φ = 36119904.

The previous prime is 72385721. The next prime is 72385739. The reversal of 72385724 is 42758327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72385721) 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, 15977 + ... + 20000.

It is an arithmetic number, because the mean of its divisors is an integer number (10577532).

Almost surely, 2^72385724 is an apocalyptic number.

It is an amenable number.

72385724 is a deficient number, since it is larger than the sum of its proper divisors (54544660).

72385724 is a wasteful number, since it uses less digits than its factorization.

72385724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36484 (or 36482 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 72385724 is about 8507.9800187824. The cubic root of 72385724 is about 416.7583476833.

The spelling of 72385724 in words is "seventy-two million, three hundred eighty-five thousand, seven hundred twenty-four".