72727402728 has 32 divisors (see below), whose sum is σ = 181877666400. Its totient is φ = 24234579648.

The previous prime is 72727402691. The next prime is 72727402729. The reversal of 72727402728 is 82720472727.

It is not an unprimeable number, because it can be changed into a prime (72727402729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417463 + ... + 565446.

It is an arithmetic number, because the mean of its divisors is an integer number (5683677075).

Almost surely, 2^72727402728 is an apocalyptic number.

It is an amenable number.

72727402728 is an abundant number, since it is smaller than the sum of its proper divisors (109150263672).

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

72727402728 is a wasteful number, since it uses less digits than its factorization.

72727402728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986001 (or 985997 counting only the distinct ones).

The product of its (nonzero) digits is 1229312, while the sum is 48.

The spelling of 72727402728 in words is "seventy-two billion, seven hundred twenty-seven million, four hundred two thousand, seven hundred twenty-eight".