22020380 has 36 divisors (see below), whose sum is σ = 47104680. Its totient is φ = 8646528.

The previous prime is 22020379. The next prime is 22020391. The reversal of 22020380 is 8302022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158351 + ... + 158489.

Almost surely, 2^22020380 is an apocalyptic number.

22020380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020380 is an abundant number, since it is smaller than the sum of its proper divisors (25084300).

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

22020380 is a wasteful number, since it uses less digits than its factorization.

22020380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22020380 is about 4692.5877722212. The cubic root of 22020380 is about 280.2904299400.

The spelling of 22020380 in words is "twenty-two million, twenty thousand, three hundred eighty".