22081880 has 16 divisors (see below), whose sum is σ = 49684320. Its totient is φ = 8832736.

The previous prime is 22081877. The next prime is 22081897. The reversal of 22081880 is 8818022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275984 + ... + 276063.

It is an arithmetic number, because the mean of its divisors is an integer number (3105270).

Almost surely, 2^22081880 is an apocalyptic number.

22081880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22081880 is an abundant number, since it is smaller than the sum of its proper divisors (27602440).

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

22081880 is a wasteful number, since it uses less digits than its factorization.

22081880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552058 (or 552054 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 22081880 is about 4699.1360908150. The cubic root of 22081880 is about 280.5511253898.

The spelling of 22081880 in words is "twenty-two million, eighty-one thousand, eight hundred eighty".