22208868 has 72 divisors (see below), whose sum is σ = 64864800. Its totient is φ = 6332160.

The previous prime is 22208833. The next prime is 22208903. The reversal of 22208868 is 86880222.

It is an interprime number because it is at equal distance from previous prime (22208833) and next prime (22208903).

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

It is an unprimeable number.

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, 5083 + ... + 8381.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^22208868 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 22208868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32432400).

22208868 is an abundant number, since it is smaller than the sum of its proper divisors (42655932).

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

22208868 is a wasteful number, since it uses less digits than its factorization.

22208868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337 (or 3332 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 22208868 is about 4712.6285658855. The cubic root of 22208868 is about 281.0878935462.

The spelling of 22208868 in words is "twenty-two million, two hundred eight thousand, eight hundred sixty-eight".