22918894 has 4 divisors (see below), whose sum is σ = 34378344. Its totient is φ = 11459446.

The previous prime is 22918849. The next prime is 22918897. The reversal of 22918894 is 49881922.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22918894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22918897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5729722 + ... + 5729725.

It is an arithmetic number, because the mean of its divisors is an integer number (8594586).

Almost surely, 2^22918894 is an apocalyptic number.

22918894 is a deficient number, since it is larger than the sum of its proper divisors (11459450).

22918894 is a wasteful number, since it uses less digits than its factorization.

22918894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11459449.

The product of its digits is 82944, while the sum is 43.

The square root of 22918894 is about 4787.3681705087. The cubic root of 22918894 is about 284.0520221438.

The spelling of 22918894 in words is "twenty-two million, nine hundred eighteen thousand, eight hundred ninety-four".