22118398 has 8 divisors (see below), whose sum is σ = 33487992. Its totient is φ = 10955736.

The previous prime is 22118363. The next prime is 22118399. The reversal of 22118398 is 89381122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118399) 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, 51465 + ... + 51892.

It is an arithmetic number, because the mean of its divisors is an integer number (4185999).

Almost surely, 2^22118398 is an apocalyptic number.

22118398 is a deficient number, since it is larger than the sum of its proper divisors (11369594).

22118398 is a wasteful number, since it uses less digits than its factorization.

22118398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103466.

The product of its digits is 6912, while the sum is 34.

The square root of 22118398 is about 4703.0200935144. The cubic root of 22118398 is about 280.7056944077.

It can be divided in two parts, 2211 and 8398, that added together give a square (10609 = 103²).

The spelling of 22118398 in words is "twenty-two million, one hundred eighteen thousand, three hundred ninety-eight".