8765122728 has 32 divisors (see below), whose sum is σ = 21974904000. Its totient is φ = 2913427968.

The previous prime is 8765122703. The next prime is 8765122763. The reversal of 8765122728 is 8272215678.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508828 + ... + 525771.

It is an arithmetic number, because the mean of its divisors is an integer number (686715750).

Almost surely, 2^8765122728 is an apocalyptic number.

It is an amenable number.

8765122728 is an abundant number, since it is smaller than the sum of its proper divisors (13209781272).

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

8765122728 is a wasteful number, since it uses less digits than its factorization.

8765122728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034961 (or 1034957 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 8765122728 is about 93622.2341540726. The cubic root of 8765122728 is about 2061.8291109579.

The spelling of 8765122728 in words is "eight billion, seven hundred sixty-five million, one hundred twenty-two thousand, seven hundred twenty-eight".