71292992 has 14 divisors (see below), whose sum is σ = 141472158. Its totient is φ = 35646464.

The previous prime is 71292953. The next prime is 71293007. The reversal of 71292992 is 29929217.

It can be written as a sum of positive squares in only one way, i.e., 50353216 + 20939776 = 7096^2 + 4576^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556913 + ... + 557040.

Almost surely, 2^71292992 is an apocalyptic number.

It is an amenable number.

71292992 is a deficient number, since it is larger than the sum of its proper divisors (70179166).

71292992 is a wasteful number, since it uses less digits than its factorization.

71292992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113965 (or 1113955 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 71292992 is about 8443.5177503218. The cubic root of 71292992 is about 414.6505831285.

The spelling of 71292992 in words is "seventy-one million, two hundred ninety-two thousand, nine hundred ninety-two".