22194972 has 60 divisors (see below), whose sum is σ = 59025736. Its totient is φ = 7270560.

The previous prime is 22194961. The next prime is 22194989. The reversal of 22194972 is 27949122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19203 + ... + 20325.

Almost surely, 2^22194972 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 22194972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29512868).

22194972 is an abundant number, since it is smaller than the sum of its proper divisors (36830764).

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

22194972 is a wasteful number, since it uses less digits than its factorization.

22194972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1189 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 22194972 is about 4711.1539987566. The cubic root of 22194972 is about 281.0292561241.

The spelling of 22194972 in words is "twenty-two million, one hundred ninety-four thousand, nine hundred seventy-two".