22005980 has 24 divisors (see below), whose sum is σ = 46475520. Its totient is φ = 8752320.

The previous prime is 22005979. The next prime is 22005989. The reversal of 22005980 is 8950022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22005989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (1936480).

Almost surely, 2^22005980 is an apocalyptic number.

22005980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22005980 is an abundant number, since it is smaller than the sum of its proper divisors (24469540).

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

22005980 is a wasteful number, since it uses less digits than its factorization.

22005980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 22005980 is about 4691.0531866522. The cubic root of 22005980 is about 280.2293189401.

The spelling of 22005980 in words is "twenty-two million, five thousand, nine hundred eighty".