72959812 has 6 divisors (see below), whose sum is σ = 127679678. Its totient is φ = 36479904.

The previous prime is 72959779. The next prime is 72959837. The reversal of 72959812 is 21895927.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 24740676 = 6944^2 + 4974^2 .

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 as a sum of consecutive naturals, namely, 9119973 + ... + 9119980.

Almost surely, 2^72959812 is an apocalyptic number.

It is an amenable number.

72959812 is a deficient number, since it is larger than the sum of its proper divisors (54719866).

72959812 is a wasteful number, since it uses less digits than its factorization.

72959812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18239957 (or 18239955 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 72959812 is about 8541.6515967347. The cubic root of 72959812 is about 417.8572118232.

The spelling of 72959812 in words is "seventy-two million, nine hundred fifty-nine thousand, eight hundred twelve".