22887920 has 80 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 8044800.

The previous prime is 22887901. The next prime is 22887961. The reversal of 22887920 is 2978822.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26861 + ... + 27699.

It is an arithmetic number, because the mean of its divisors is an integer number (749952).

Almost surely, 2^22887920 is an apocalyptic number.

22887920 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 22887920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29998080).

22887920 is an abundant number, since it is smaller than the sum of its proper divisors (37108240).

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

22887920 is a wasteful number, since it uses less digits than its factorization.

22887920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 22887920 is about 4784.1321051994. The cubic root of 22887920 is about 283.9240026765.

The spelling of 22887920 in words is "twenty-two million, eight hundred eighty-seven thousand, nine hundred twenty".