72908692 has 12 divisors (see below), whose sum is σ = 128906260. Its totient is φ = 36078336.

The previous prime is 72908687. The next prime is 72908707. The reversal of 72908692 is 29680927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9960336 + 62948356 = 3156^2 + 7934^2 .

It is a congruent number.

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, 93567 + ... + 94342.

Almost surely, 2^72908692 is an apocalyptic number.

It is an amenable number.

72908692 is a deficient number, since it is larger than the sum of its proper divisors (55997568).

72908692 is a wasteful number, since it uses less digits than its factorization.

72908692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188010 (or 188008 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 72908692 is about 8538.6586768649. The cubic root of 72908692 is about 417.7595971185.

The spelling of 72908692 in words is "seventy-two million, nine hundred eight thousand, six hundred ninety-two".