22057320 has 64 divisors (see below), whose sum is σ = 66481920. Its totient is φ = 5854464.

The previous prime is 22057283. The next prime is 22057331. The reversal of 22057320 is 2375022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47409 + ... + 47871.

It is an arithmetic number, because the mean of its divisors is an integer number (1038780).

Almost surely, 2^22057320 is an apocalyptic number.

22057320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22057320 is an abundant number, since it is smaller than the sum of its proper divisors (44424600).

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

22057320 is a wasteful number, since it uses less digits than its factorization.

22057320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 22057320 is about 4696.5221174823. The cubic root of 22057320 is about 280.4470748930.

The spelling of 22057320 in words is "twenty-two million, fifty-seven thousand, three hundred twenty".