22198536 has 96 divisors (see below), whose sum is σ = 65738400. Its totient is φ = 6998400.

The previous prime is 22198513. The next prime is 22198591. The reversal of 22198536 is 63589122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22198536.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36636 + ... + 37236.

It is an arithmetic number, because the mean of its divisors is an integer number (684775).

Almost surely, 2^22198536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22198536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32869200).

22198536 is an abundant number, since it is smaller than the sum of its proper divisors (43539864).

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

22198536 is a wasteful number, since it uses less digits than its factorization.

22198536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 625 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22198536 is about 4711.5322348467. The cubic root of 22198536 is about 281.0442975887.

The spelling of 22198536 in words is "twenty-two million, one hundred ninety-eight thousand, five hundred thirty-six".