22521198 has 16 divisors (see below), whose sum is σ = 51477120. Its totient is φ = 6434616.

The previous prime is 22521193. The next prime is 22521203. The reversal of 22521198 is 89112522.

It is an interprime number because it is at equal distance from previous prime (22521193) and next prime (22521203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268068 + ... + 268151.

It is an arithmetic number, because the mean of its divisors is an integer number (3217320).

Almost surely, 2^22521198 is an apocalyptic number.

22521198 is an abundant number, since it is smaller than the sum of its proper divisors (28955922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22521198 is a wasteful number, since it uses less digits than its factorization.

22521198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536231.

The product of its digits is 2880, while the sum is 30.

The square root of 22521198 is about 4745.6504296039. The cubic root of 22521198 is about 282.3994389773.

The spelling of 22521198 in words is "twenty-two million, five hundred twenty-one thousand, one hundred ninety-eight".