22887864 has 24 divisors (see below), whose sum is σ = 61988160. Its totient is φ = 7629264.

The previous prime is 22887857. The next prime is 22887901. The reversal of 22887864 is 46878822.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158872 + ... + 159015.

It is an arithmetic number, because the mean of its divisors is an integer number (2582840).

Almost surely, 2^22887864 is an apocalyptic number.

22887864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22887864 is an abundant number, since it is smaller than the sum of its proper divisors (39100296).

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

22887864 is a wasteful number, since it uses less digits than its factorization.

22887864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317899 (or 317892 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 22887864 is about 4784.1262525147. The cubic root of 22887864 is about 283.9237711169.

The spelling of 22887864 in words is "twenty-two million, eight hundred eighty-seven thousand, eight hundred sixty-four".