72690992 has 30 divisors (see below), whose sum is σ = 154810404. Its totient is φ = 33040480.

The previous prime is 72690973. The next prime is 72691019. The reversal of 72690992 is 29909627.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16838 + ... + 20709.

Almost surely, 2^72690992 is an apocalyptic number.

It is an amenable number.

72690992 is an abundant number, since it is smaller than the sum of its proper divisors (82119412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72690992 is a wasteful number, since it uses less digits than its factorization.

72690992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37577 (or 37560 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 72690992 is about 8525.9012426840. The cubic root of 72690992 is about 417.3433827556.

The spelling of 72690992 in words is "seventy-two million, six hundred ninety thousand, nine hundred ninety-two".