22820868 has 108 divisors (see below), whose sum is σ = 71144892. Its totient is φ = 6128640.

The previous prime is 22820857. The next prime is 22820873. The reversal of 22820868 is 86802822.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 16257024 = 2562^2 + 4032^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29608 + ... + 30368.

It is an arithmetic number, because the mean of its divisors is an integer number (658749).

Almost surely, 2^22820868 is an apocalyptic number.

22820868 is a gapful number since it is divisible by the number (28) 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 22820868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35572446).

22820868 is an abundant number, since it is smaller than the sum of its proper divisors (48324024).

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

22820868 is a wasteful number, since it uses less digits than its factorization.

22820868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 22820868 is about 4777.1192155943. The cubic root of 22820868 is about 283.6464720936.

The spelling of 22820868 in words is "twenty-two million, eight hundred twenty thousand, eight hundred sixty-eight".