22057993 has 16 divisors (see below), whose sum is σ = 25125120. Its totient is φ = 19236096.

The previous prime is 22057969. The next prime is 22058039. The reversal of 22057993 is 39975022.

It is a cyclic number.

It is not a de Polignac number, because 22057993 - 2⁵ = 22057961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22057913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14455 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (1570320).

Almost surely, 2^22057993 is an apocalyptic number.

It is an amenable number.

22057993 is a deficient number, since it is larger than the sum of its proper divisors (3067127).

22057993 is a wasteful number, since it uses less digits than its factorization.

22057993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 22057993 is about 4696.5937656987. The cubic root of 22057993 is about 280.4499271428.

The spelling of 22057993 in words is "twenty-two million, fifty-seven thousand, nine hundred ninety-three".