22057989 has 8 divisors (see below), whose sum is σ = 30689472. Its totient is φ = 14065920.

The previous prime is 22057969. The next prime is 22058039. The reversal of 22057989 is 98975022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22057989 - 2⁸ = 22057733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22057989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22057949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159772 + ... + 159909.

It is an arithmetic number, because the mean of its divisors is an integer number (3836184).

Almost surely, 2^22057989 is an apocalyptic number.

It is an amenable number.

22057989 is a deficient number, since it is larger than the sum of its proper divisors (8631483).

22057989 is a wasteful number, since it uses less digits than its factorization.

22057989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319707.

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

The square root of 22057989 is about 4696.5933398582. The cubic root of 22057989 is about 280.4499101906.

The spelling of 22057989 in words is "twenty-two million, fifty-seven thousand, nine hundred eighty-nine".