22169972 has 48 divisors (see below), whose sum is σ = 45396288. Its totient is φ = 9361920.

The previous prime is 22169969. The next prime is 22169977. The reversal of 22169972 is 27996122.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

22169972 is a modest number, since divided by 9972 gives 2216 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22169977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79898 + ... + 80174.

It is an arithmetic number, because the mean of its divisors is an integer number (945756).

Almost surely, 2^22169972 is an apocalyptic number.

22169972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a pronic number, being equal to 4708×4709.

It is an amenable number.

22169972 is an abundant number, since it is smaller than the sum of its proper divisors (23226316).

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

22169972 is a wasteful number, since it uses less digits than its factorization.

22169972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 22169972 is about 4708.4999734523. The cubic root of 22169972 is about 280.9237011221.

The spelling of 22169972 in words is "twenty-two million, one hundred sixty-nine thousand, nine hundred seventy-two".