22119920 has 20 divisors (see below), whose sum is σ = 51429000. Its totient is φ = 8847936.

The previous prime is 22119919. The next prime is 22119959. The reversal of 22119920 is 2991122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 22119920.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 138170 + ... + 138329.

It is an arithmetic number, because the mean of its divisors is an integer number (2571450).

Almost surely, 2^22119920 is an apocalyptic number.

22119920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22119920 is an abundant number, since it is smaller than the sum of its proper divisors (29309080).

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

22119920 is a wasteful number, since it uses less digits than its factorization.

22119920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276512 (or 276506 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 22119920 is about 4703.1819016491. The cubic root of 22119920 is about 280.7121328527.

The spelling of 22119920 in words is "twenty-two million, one hundred nineteen thousand, nine hundred twenty".