8917113728 has 32 divisors (see below), whose sum is σ = 18142544160. Its totient is φ = 4363691008.

The previous prime is 8917113727. The next prime is 8917113767. The reversal of 8917113728 is 8273117198.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8917113727) 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 in 3 ways as a sum of consecutive naturals, for example, 735101 + ... + 747132.

It is an arithmetic number, because the mean of its divisors is an integer number (566954505).

Almost surely, 2^8917113728 is an apocalyptic number.

It is an amenable number.

8917113728 is an abundant number, since it is smaller than the sum of its proper divisors (9225430432).

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

8917113728 is a wasteful number, since it uses less digits than its factorization.

8917113728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482294 (or 1482282 counting only the distinct ones).

The product of its digits is 169344, while the sum is 47.

The square root of 8917113728 is about 94430.4703366450. The cubic root of 8917113728 is about 2073.6785491856.

The spelling of 8917113728 in words is "eight billion, nine hundred seventeen million, one hundred thirteen thousand, seven hundred twenty-eight".