22195944 has 40 divisors (see below), whose sum is σ = 62171010. Its totient is φ = 7398432.

The previous prime is 22195889. The next prime is 22195981. The reversal of 22195944 is 44959122.

It can be written as a sum of positive squares in only one way, i.e., 21068100 + 1127844 = 4590^2 + 1062^2 .

It is a super-2 number, since 2×22195944² = 985319860102272, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 22195899 and 22195908.

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 9 ways as a sum of consecutive naturals, for example, 16479 + ... + 17774.

Almost surely, 2^22195944 is an apocalyptic number.

22195944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22195944 is an abundant number, since it is smaller than the sum of its proper divisors (39975066).

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

22195944 is a wasteful number, since it uses less digits than its factorization.

22195944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34271 (or 34258 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22195944 is about 4711.2571570654. The cubic root of 22195944 is about 281.0333585014.

The spelling of 22195944 in words is "twenty-two million, one hundred ninety-five thousand, nine hundred forty-four".