22645868 has 36 divisors (see below), whose sum is σ = 47135760. Its totient is φ = 9314592.

The previous prime is 22645859. The next prime is 22645877. The reversal of 22645868 is 86854622.

It is an interprime number because it is at equal distance from previous prime (22645859) and next prime (22645877).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135521 + ... + 135687.

Almost surely, 2^22645868 is an apocalyptic number.

22645868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22645868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23567880).

22645868 is an abundant number, since it is smaller than the sum of its proper divisors (24489892).

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

22645868 is a wasteful number, since it uses less digits than its factorization.

22645868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 205 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 22645868 is about 4758.7674874909. The cubic root of 22645868 is about 282.9195707628.

The spelling of 22645868 in words is "twenty-two million, six hundred forty-five thousand, eight hundred sixty-eight".