8688972 has 48 divisors (see below), whose sum is σ = 21676032. Its totient is φ = 2699520.

The previous prime is 8688961. The next prime is 8688991. The reversal of 8688972 is 2798868.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38853 + ... + 39075.

It is an arithmetic number, because the mean of its divisors is an integer number (451584).

Almost surely, 2^8688972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8688972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10838016).

8688972 is an abundant number, since it is smaller than the sum of its proper divisors (12987060).

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

8688972 is a wasteful number, since it uses less digits than its factorization.

8688972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 436 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 8688972 is about 2947.7062268822. The cubic root of 8688972 is about 205.5840729637.

The spelling of 8688972 in words is "eight million, six hundred eighty-eight thousand, nine hundred seventy-two".