72646828 has 6 divisors (see below), whose sum is σ = 127131956. Its totient is φ = 36323412.

The previous prime is 72646813. The next prime is 72646841. The reversal of 72646828 is 82864627.

It is a super-3 number, since 3×72646828³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9080850 + ... + 9080857.

Almost surely, 2^72646828 is an apocalyptic number.

It is an amenable number.

72646828 is a deficient number, since it is larger than the sum of its proper divisors (54485128).

72646828 is a wasteful number, since it uses less digits than its factorization.

72646828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18161711 (or 18161709 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 72646828 is about 8523.3108590500. The cubic root of 72646828 is about 417.2588455172.

The spelling of 72646828 in words is "seventy-two million, six hundred forty-six thousand, eight hundred twenty-eight".