22198512 has 40 divisors (see below), whose sum is σ = 65539456. Its totient is φ = 6342336.

The previous prime is 22198493. The next prime is 22198513. The reversal of 22198512 is 21589122.

It is a self number, because there is not a number n which added to its sum of digits gives 22198512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198513) 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, 32698 + ... + 33369.

Almost surely, 2^22198512 is an apocalyptic number.

It is an amenable number.

22198512 is an abundant number, since it is smaller than the sum of its proper divisors (43340944).

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

22198512 is a wasteful number, since it uses less digits than its factorization.

22198512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66085 (or 66079 counting only the distinct ones).

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

The square root of 22198512 is about 4711.5296879039. The cubic root of 22198512 is about 281.0441963048.

It can be divided in two parts, 2219 and 8512, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 22198512 in words is "twenty-two million, one hundred ninety-eight thousand, five hundred twelve".