72728466 has 32 divisors (see below), whose sum is σ = 154714560. Its totient is φ = 22726656.

The previous prime is 72728419. The next prime is 72728471. The reversal of 72728466 is 66482727.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7770 + ... + 14346.

It is an arithmetic number, because the mean of its divisors is an integer number (4834830).

Almost surely, 2^72728466 is an apocalyptic number.

72728466 is an abundant number, since it is smaller than the sum of its proper divisors (81986094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72728466 is a wasteful number, since it uses less digits than its factorization.

72728466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698.

The product of its digits is 225792, while the sum is 42.

The square root of 72728466 is about 8528.0986157525. The cubic root of 72728466 is about 417.4150873724.

The spelling of 72728466 in words is "seventy-two million, seven hundred twenty-eight thousand, four hundred sixty-six".