22529198 has 4 divisors (see below), whose sum is σ = 33793800. Its totient is φ = 11264598.

The previous prime is 22529197. The next prime is 22529203. The reversal of 22529198 is 89192522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89192522 = 2 ⋅44596261.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22529197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5632298 + ... + 5632301.

It is an arithmetic number, because the mean of its divisors is an integer number (8448450).

Almost surely, 2^22529198 is an apocalyptic number.

22529198 is a deficient number, since it is larger than the sum of its proper divisors (11264602).

22529198 is a wasteful number, since it uses less digits than its factorization.

22529198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11264601.

The product of its digits is 25920, while the sum is 38.

The square root of 22529198 is about 4746.4932318502. The cubic root of 22529198 is about 282.4328730789.

The spelling of 22529198 in words is "twenty-two million, five hundred twenty-nine thousand, one hundred ninety-eight".