22057998 has 16 divisors (see below), whose sum is σ = 44250960. Its totient is φ = 7330176.

The previous prime is 22057969. The next prime is 22058039. The reversal of 22057998 is 89975022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3433 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (2765685).

Almost surely, 2^22057998 is an apocalyptic number.

22057998 is an abundant number, since it is smaller than the sum of its proper divisors (22192962).

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

22057998 is a wasteful number, since it uses less digits than its factorization.

22057998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 22057998 is about 4696.5942979993. The cubic root of 22057998 is about 280.4499483332.

The spelling of 22057998 in words is "twenty-two million, fifty-seven thousand, nine hundred ninety-eight".