8722872 has 24 divisors (see below), whose sum is σ = 23624640. Its totient is φ = 2907600.

The previous prime is 8722859. The next prime is 8722877. The reversal of 8722872 is 2782278.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 8³ + 7⁷ + 2¹⁵ + 2²⁰ + 8⁴ + 7⁸ + 2²⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60504 + ... + 60647.

It is an arithmetic number, because the mean of its divisors is an integer number (984360).

Almost surely, 2^8722872 is an apocalyptic number.

It is an amenable number.

8722872 is an abundant number, since it is smaller than the sum of its proper divisors (14901768).

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

8722872 is a wasteful number, since it uses less digits than its factorization.

8722872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121163 (or 121156 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 8722872 is about 2953.4508629737. The cubic root of 8722872 is about 205.8510879070.

The spelling of 8722872 in words is "eight million, seven hundred twenty-two thousand, eight hundred seventy-two".