22084820 has 12 divisors (see below), whose sum is σ = 46378164. Its totient is φ = 8833920.

The previous prime is 22084813. The next prime is 22084831. The reversal of 22084820 is 2848022.

It can be written as a sum of positive squares in 2 ways, for example, as 10982596 + 11102224 = 3314^2 + 3332^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22084820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552101 + ... + 552140.

It is an arithmetic number, because the mean of its divisors is an integer number (3864847).

Almost surely, 2^22084820 is an apocalyptic number.

22084820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22084820 is an abundant number, since it is smaller than the sum of its proper divisors (24293344).

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

22084820 is a wasteful number, since it uses less digits than its factorization.

22084820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104250 (or 1104248 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 22084820 is about 4699.4489038610. The cubic root of 22084820 is about 280.5635757745.

The spelling of 22084820 in words is "twenty-two million, eighty-four thousand, eight hundred twenty".