22809860 has 12 divisors (see below), whose sum is σ = 47900748. Its totient is φ = 9123936.

The previous prime is 22809827. The next prime is 22809881. The reversal of 22809860 is 6890822.

It can be written as a sum of positive squares in 2 ways, for example, as 14868736 + 7941124 = 3856^2 + 2818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22809860.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570227 + ... + 570266.

It is an arithmetic number, because the mean of its divisors is an integer number (3991729).

Almost surely, 2^22809860 is an apocalyptic number.

22809860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22809860 is an abundant number, since it is smaller than the sum of its proper divisors (25090888).

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

22809860 is a wasteful number, since it uses less digits than its factorization.

22809860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140502 (or 1140500 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 22809860 is about 4775.9669178084. The cubic root of 22809860 is about 283.6008576653.

The spelling of 22809860 in words is "twenty-two million, eight hundred nine thousand, eight hundred sixty".