8722128576 has 84 divisors (see below), whose sum is σ = 26845049688. Its totient is φ = 2492034048.

The previous prime is 8722128559. The next prime is 8722128577. The reversal of 8722128576 is 6758212278.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (8722128577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454141 + ... + 472956.

Almost surely, 2^8722128576 is an apocalyptic number.

It is an amenable number.

8722128576 is an abundant number, since it is smaller than the sum of its proper divisors (18122921112).

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

8722128576 is a wasteful number, since it uses less digits than its factorization.

8722128576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927126 (or 927109 counting only the distinct ones).

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

The square root of 8722128576 is about 93392.3368162506. The cubic root of 8722128576 is about 2058.4523971900.

The spelling of 8722128576 in words is "eight billion, seven hundred twenty-two million, one hundred twenty-eight thousand, five hundred seventy-six".