22918402 has 8 divisors (see below), whose sum is σ = 37022076. Its totient is φ = 10577712.

The previous prime is 22918369. The next prime is 22918403. The reversal of 22918402 is 20481922.

It can be written as a sum of positive squares in 2 ways, for example, as 16573041 + 6345361 = 4071^2 + 2519^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22918403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440713 + ... + 440764.

Almost surely, 2^22918402 is an apocalyptic number.

22918402 is a deficient number, since it is larger than the sum of its proper divisors (14103674).

22918402 is a wasteful number, since it uses less digits than its factorization.

22918402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881492.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22918402 is about 4787.3167850060. The cubic root of 22918402 is about 284.0499895472.

The spelling of 22918402 in words is "twenty-two million, nine hundred eighteen thousand, four hundred two".