22204920 has 64 divisors (see below), whose sum is σ = 70128000. Its totient is φ = 5609088.

The previous prime is 22204909. The next prime is 22204943. The reversal of 22204920 is 2940222.

22204920 = T₂₂₀ + T₂₂₁ + ... + T₅₂₃.

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 15 ways as a sum of consecutive naturals, for example, 2590 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (1095750).

Almost surely, 2^22204920 is an apocalyptic number.

22204920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22204920 is an abundant number, since it is smaller than the sum of its proper divisors (47923080).

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

22204920 is a wasteful number, since it uses less digits than its factorization.

22204920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772 (or 9768 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22204920 is about 4712.2096727544. The cubic root of 22204920 is about 281.0712365248.

It can be divided in two parts, 2220 and 4920, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 22204920 in words is "twenty-two million, two hundred four thousand, nine hundred twenty".