72373724 has 6 divisors (see below), whose sum is σ = 126654024. Its totient is φ = 36186860.

The previous prime is 72373723. The next prime is 72373751. The reversal of 72373724 is 42737327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72373723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9046712 + ... + 9046719.

It is an arithmetic number, because the mean of its divisors is an integer number (21109004).

Almost surely, 2^72373724 is an apocalyptic number.

It is an amenable number.

72373724 is a deficient number, since it is larger than the sum of its proper divisors (54280300).

72373724 is a wasteful number, since it uses less digits than its factorization.

72373724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18093435 (or 18093433 counting only the distinct ones).

The product of its digits is 49392, while the sum is 35.

The square root of 72373724 is about 8507.2747692783. The cubic root of 72373724 is about 416.7353165464.

It can be divided in two parts, 723 and 73724, that added together give a palindrome (74447).

The spelling of 72373724 in words is "seventy-two million, three hundred seventy-three thousand, seven hundred twenty-four".