22557994 has 8 divisors (see below), whose sum is σ = 34103808. Its totient is φ = 11190060.

The previous prime is 22557991. The next prime is 22558051. The reversal of 22557994 is 49975522.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22557994.

It is not an unprimeable number, because it can be changed into a prime (22557991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44152 + ... + 44659.

It is an arithmetic number, because the mean of its divisors is an integer number (4262976).

Almost surely, 2^22557994 is an apocalyptic number.

22557994 is a deficient number, since it is larger than the sum of its proper divisors (11545814).

22557994 is a wasteful number, since it uses less digits than its factorization.

22557994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88940.

The product of its digits is 226800, while the sum is 43.

The square root of 22557994 is about 4749.5256605265. The cubic root of 22557994 is about 282.5531536498.

The spelling of 22557994 in words is "twenty-two million, five hundred fifty-seven thousand, nine hundred ninety-four".