22805880 has 64 divisors (see below), whose sum is σ = 71400960. Its totient is φ = 5816448.

The previous prime is 22805851. The next prime is 22805911. The reversal of 22805880 is 8850822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1372 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (1115640).

Almost surely, 2^22805880 is an apocalyptic number.

22805880 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 22805880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35700480).

22805880 is an abundant number, since it is smaller than the sum of its proper divisors (48595080).

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

22805880 is a wasteful number, since it uses less digits than its factorization.

22805880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8300 (or 8296 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 22805880 is about 4775.5502300782. The cubic root of 22805880 is about 283.5843619178.

The spelling of 22805880 in words is "twenty-two million, eight hundred five thousand, eight hundred eighty".