22013868 has 24 divisors (see below), whose sum is σ = 52336368. Its totient is φ = 7199296.

The previous prime is 22013867. The next prime is 22013879. The reversal of 22013868 is 86831022.

It is a super-2 number, since 2×22013868² = 969220768642848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22013867) 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, 16671 + ... + 17942.

It is an arithmetic number, because the mean of its divisors is an integer number (2180682).

Almost surely, 2^22013868 is an apocalyptic number.

It is an amenable number.

22013868 is an abundant number, since it is smaller than the sum of its proper divisors (30322500).

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

22013868 is a wasteful number, since it uses less digits than its factorization.

22013868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34673 (or 34671 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 22013868 is about 4691.8938606921. The cubic root of 22013868 is about 280.2627974887.

The spelling of 22013868 in words is "twenty-two million, thirteen thousand, eight hundred sixty-eight".