22189974 has 16 divisors (see below), whose sum is σ = 44679600. Its totient is φ = 7346720.

The previous prime is 22189961. The next prime is 22189991. The reversal of 22189974 is 47998122.

It is a super-2 number, since 2×22189974² = 984789892241352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11517 + ... + 13304.

It is an arithmetic number, because the mean of its divisors is an integer number (2792475).

Almost surely, 2^22189974 is an apocalyptic number.

22189974 is an abundant number, since it is smaller than the sum of its proper divisors (22489626).

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

22189974 is a wasteful number, since it uses less digits than its factorization.

22189974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975.

The product of its digits is 72576, while the sum is 42.

The square root of 22189974 is about 4710.6235256068. The cubic root of 22189974 is about 281.0081599096.

The spelling of 22189974 in words is "twenty-two million, one hundred eighty-nine thousand, nine hundred seventy-four".