8581972 has 24 divisors (see below), whose sum is σ = 17490816. Its totient is φ = 3607968.

The previous prime is 8581961. The next prime is 8581973. The reversal of 8581972 is 2791858.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8581973) 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 7 ways as a sum of consecutive naturals, for example, 1408 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (728784).

Almost surely, 2^8581972 is an apocalyptic number.

It is an amenable number.

8581972 is an abundant number, since it is smaller than the sum of its proper divisors (8908844).

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

8581972 is a wasteful number, since it uses less digits than its factorization.

8581972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847 (or 5845 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 8581972 is about 2929.5002986858. The cubic root of 8581972 is about 204.7366994411.

The spelling of 8581972 in words is "eight million, five hundred eighty-one thousand, nine hundred seventy-two".