22057420 has 48 divisors (see below), whose sum is σ = 57754368. Its totient is φ = 6874560.

The previous prime is 22057403. The next prime is 22057433. The reversal of 22057420 is 2475022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22057391 and 22057400.

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, 5622 + ... + 8701.

It is an arithmetic number, because the mean of its divisors is an integer number (1203216).

Almost surely, 2^22057420 is an apocalyptic number.

22057420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22057420 is an abundant number, since it is smaller than the sum of its proper divisors (35696948).

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

22057420 is a wasteful number, since it uses less digits than its factorization.

22057420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14350 (or 14348 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22057420 is about 4696.5327636460. The cubic root of 22057420 is about 280.4474987079.

The spelling of 22057420 in words is "twenty-two million, fifty-seven thousand, four hundred twenty".