22855872 has 56 divisors (see below), whose sum is σ = 65131696. Its totient is φ = 7031808.

The previous prime is 22855867. The next prime is 22855873. The reversal of 22855872 is 27855822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 22855872.

It is not an unprimeable number, because it can be changed into a prime (22855873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083 + ... + 7074.

It is an arithmetic number, because the mean of its divisors is an integer number (1163066).

Almost surely, 2^22855872 is an apocalyptic number.

It is an amenable number.

22855872 is an abundant number, since it is smaller than the sum of its proper divisors (42275824).

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

22855872 is a wasteful number, since it uses less digits than its factorization.

22855872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185 (or 9175 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 22855872 is about 4780.7815260687. The cubic root of 22855872 is about 283.7914225981.

The spelling of 22855872 in words is "twenty-two million, eight hundred fifty-five thousand, eight hundred seventy-two".