22559920 has 40 divisors (see below), whose sum is σ = 53184096. Its totient is φ = 8898048.

The previous prime is 22559893. The next prime is 22559959. The reversal of 22559920 is 2995522.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 3909 + ... + 7771.

Almost surely, 2^22559920 is an apocalyptic number.

22559920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22559920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26592048).

22559920 is an abundant number, since it is smaller than the sum of its proper divisors (30624176).

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

22559920 is a wasteful number, since it uses less digits than its factorization.

22559920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 22559920 is about 4749.7284132885. The cubic root of 22559920 is about 282.5611948774.

The spelling of 22559920 in words is "twenty-two million, five hundred fifty-nine thousand, nine hundred twenty".