72830644 has 12 divisors (see below), whose sum is σ = 127518244. Its totient is φ = 36396864.

The previous prime is 72830623. The next prime is 72830663. The reversal of 72830644 is 44603827.

It can be written as a sum of positive squares in 2 ways, for example, as 54937744 + 17892900 = 7412^2 + 4230^2 .

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, 8242 + ... + 14614.

Almost surely, 2^72830644 is an apocalyptic number.

It is an amenable number.

72830644 is a deficient number, since it is larger than the sum of its proper divisors (54687600).

72830644 is a wasteful number, since it uses less digits than its factorization.

72830644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9234 (or 9232 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 72830644 is about 8534.0871802437. The cubic root of 72830644 is about 417.6104747866.

The spelling of 72830644 in words is "seventy-two million, eight hundred thirty thousand, six hundred forty-four".