22198860 has 120 divisors (see below), whose sum is σ = 70985376. Its totient is φ = 5806080.

The previous prime is 22198837. The next prime is 22198873. The reversal of 22198860 is 6889122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 114924 + ... + 115116.

Almost surely, 2^22198860 is an apocalyptic number.

22198860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22198860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35492688).

22198860 is an abundant number, since it is smaller than the sum of its proper divisors (48786516).

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

22198860 is a wasteful number, since it uses less digits than its factorization.

22198860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 22198860 is about 4711.5666184402. The cubic root of 22198860 is about 281.0456649148.

The spelling of 22198860 in words is "twenty-two million, one hundred ninety-eight thousand, eight hundred sixty".