72064732 has 12 divisors (see below), whose sum is σ = 129046456. Its totient is φ = 35194320.

The previous prime is 72064721. The next prime is 72064747. The reversal of 72064732 is 23746027.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72064694 and 72064703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209319 + ... + 209662.

Almost surely, 2^72064732 is an apocalyptic number.

It is an amenable number.

72064732 is a deficient number, since it is larger than the sum of its proper divisors (56981724).

72064732 is a wasteful number, since it uses less digits than its factorization.

72064732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419028 (or 419026 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 72064732 is about 8489.0948869712. The cubic root of 72064732 is about 416.1414013272.

The spelling of 72064732 in words is "seventy-two million, sixty-four thousand, seven hundred thirty-two".