22002980 has 12 divisors (see below), whose sum is σ = 46206300. Its totient is φ = 8801184.

The previous prime is 22002949. The next prime is 22002989. The reversal of 22002980 is 8920022.

It can be written as a sum of positive squares in 2 ways, for example, as 3564544 + 18438436 = 1888^2 + 4294^2 .

It is a super-2 number, since 2×22002980² = 968262257760800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22002989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550055 + ... + 550094.

It is an arithmetic number, because the mean of its divisors is an integer number (3850525).

Almost surely, 2^22002980 is an apocalyptic number.

22002980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002980 is an abundant number, since it is smaller than the sum of its proper divisors (24203320).

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

22002980 is a wasteful number, since it uses less digits than its factorization.

22002980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100158 (or 1100156 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22002980 is about 4690.7334181341. The cubic root of 22002980 is about 280.2165841265.

The spelling of 22002980 in words is "twenty-two million, two thousand, nine hundred eighty".