72682216 has 8 divisors (see below), whose sum is σ = 136279170. Its totient is φ = 36341104.

The previous prime is 72682193. The next prime is 72682219. The reversal of 72682216 is 61228627.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 25704900 = 6854^2 + 5070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72682219) by changing a digit.

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, 4542631 + ... + 4542646.

Almost surely, 2^72682216 is an apocalyptic number.

It is an amenable number.

72682216 is a deficient number, since it is larger than the sum of its proper divisors (63596954).

72682216 is a wasteful number, since it uses less digits than its factorization.

72682216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085283 (or 9085279 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 72682216 is about 8525.3865601508. The cubic root of 72682216 is about 417.3265867591.

The spelling of 72682216 in words is "seventy-two million, six hundred eighty-two thousand, two hundred sixteen".