22918394 has 4 divisors (see below), whose sum is σ = 34377594. Its totient is φ = 11459196.

The previous prime is 22918369. The next prime is 22918403. The reversal of 22918394 is 49381922.

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

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 3025 = 4787^2 + 55^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5729597 + ... + 5729600.

Almost surely, 2^22918394 is an apocalyptic number.

22918394 is a deficient number, since it is larger than the sum of its proper divisors (11459200).

22918394 is a wasteful number, since it uses less digits than its factorization.

22918394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11459199.

The product of its digits is 31104, while the sum is 38.

The square root of 22918394 is about 4787.3159494648. The cubic root of 22918394 is about 284.0499564966.

The spelling of 22918394 in words is "twenty-two million, nine hundred eighteen thousand, three hundred ninety-four".