72093992 has 32 divisors (see below), whose sum is σ = 138597480. Its totient is φ = 35143680.

The previous prime is 72093953. The next prime is 72094013. The reversal of 72093992 is 29939027.

It can be written as a sum of positive squares in 4 ways, for example, as 49758916 + 22335076 = 7054^2 + 4726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81392 + ... + 82272.

Almost surely, 2^72093992 is an apocalyptic number.

It is an amenable number.

72093992 is a deficient number, since it is larger than the sum of its proper divisors (66503488).

72093992 is a wasteful number, since it uses less digits than its factorization.

72093992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 72093992 is about 8490.8180995709. The cubic root of 72093992 is about 416.1977148178.

The spelling of 72093992 in words is "seventy-two million, ninety-three thousand, nine hundred ninety-two".