22198550 has 24 divisors (see below), whose sum is σ = 45043992. Its totient is φ = 8072000.

The previous prime is 22198513. The next prime is 22198591. The reversal of 22198550 is 5589122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19631 + ... + 20730.

It is an arithmetic number, because the mean of its divisors is an integer number (1876833).

Almost surely, 2^22198550 is an apocalyptic number.

22198550 is an abundant number, since it is smaller than the sum of its proper divisors (22845442).

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

22198550 is a wasteful number, since it uses less digits than its factorization.

22198550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40384 (or 40379 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 22198550 is about 4711.5337205628. The cubic root of 22198550 is about 281.0443566710.

It can be divided in two parts, 22 and 198550, that multiplied together give a square (4368100 = 2090²).

The spelling of 22198550 in words is "twenty-two million, one hundred ninety-eight thousand, five hundred fifty".