72089936 has 10 divisors (see below), whose sum is σ = 139674282. Its totient is φ = 36044960.

The previous prime is 72089929. The next prime is 72089959. The reversal of 72089936 is 63998027.

It can be written as a sum of positive squares in only one way, i.e., 66520336 + 5569600 = 8156^2 + 2360^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252795 + ... + 2252826.

Almost surely, 2^72089936 is an apocalyptic number.

It is an amenable number.

72089936 is a deficient number, since it is larger than the sum of its proper divisors (67584346).

72089936 is a wasteful number, since it uses less digits than its factorization.

72089936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505629 (or 4505623 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 72089936 is about 8490.5792499688. The cubic root of 72089936 is about 416.1899095923.

The spelling of 72089936 in words is "seventy-two million, eighty-nine thousand, nine hundred thirty-six".