22043868 has 48 divisors (see below), whose sum is σ = 64130304. Its totient is φ = 5725440.

The previous prime is 22043851. The next prime is 22043891. The reversal of 22043868 is 86834022.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent 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, 11005 + ... + 12852.

It is an arithmetic number, because the mean of its divisors is an integer number (1336048).

Almost surely, 2^22043868 is an apocalyptic number.

22043868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22043868 is an abundant number, since it is smaller than the sum of its proper divisors (42086436).

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

22043868 is a wasteful number, since it uses less digits than its factorization.

22043868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23882 (or 23880 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 22043868 is about 4695.0897754995. The cubic root of 22043868 is about 280.3900516277.

The spelling of 22043868 in words is "twenty-two million, forty-three thousand, eight hundred sixty-eight".