8811972 has 72 divisors (see below), whose sum is σ = 25276160. Its totient is φ = 2566080.

The previous prime is 8811961. The next prime is 8811973. The reversal of 8811972 is 2791188.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8811973) 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 23 ways as a sum of consecutive naturals, for example, 8397 + ... + 9387.

Almost surely, 2^8811972 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 8811972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12638080).

8811972 is an abundant number, since it is smaller than the sum of its proper divisors (16464188).

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

8811972 is a wasteful number, since it uses less digits than its factorization.

8811972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1028 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 8811972 is about 2968.4965891845. The cubic root of 8811972 is about 206.5496053443.

The spelling of 8811972 in words is "eight million, eight hundred eleven thousand, nine hundred seventy-two".