22221894 has 8 divisors (see below), whose sum is σ = 44443800. Its totient is φ = 7407296.

The previous prime is 22221889. The next prime is 22221911. The reversal of 22221894 is 49812222.

It is a sphenic number, since it is the product of 3 distinct primes.

22221894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851819 + ... + 1851830.

It is an arithmetic number, because the mean of its divisors is an integer number (5555475).

Almost surely, 2^22221894 is an apocalyptic number.

22221894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22221894 is a wasteful number, since it uses less digits than its factorization.

22221894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703654.

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

The square root of 22221894 is about 4714.0103945579. The cubic root of 22221894 is about 281.1428375937.

The spelling of 22221894 in words is "twenty-two million, two hundred twenty-one thousand, eight hundred ninety-four".