72113908 has 6 divisors (see below), whose sum is σ = 126199346. Its totient is φ = 36056952.

The previous prime is 72113897. The next prime is 72113917. The reversal of 72113908 is 80931127.

It can be written as a sum of positive squares in only one way, i.e., 64834704 + 7279204 = 8052^2 + 2698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72113908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9014235 + ... + 9014242.

Almost surely, 2^72113908 is an apocalyptic number.

It is an amenable number.

72113908 is a deficient number, since it is larger than the sum of its proper divisors (54085438).

72113908 is a wasteful number, since it uses less digits than its factorization.

72113908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18028481 (or 18028479 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 72113908 is about 8491.9908148796. The cubic root of 72113908 is about 416.2360362289.

The spelling of 72113908 in words is "seventy-two million, one hundred thirteen thousand, nine hundred eight".