22199980 has 96 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 7418880.

The previous prime is 22199971. The next prime is 22200001. The reversal of 22199980 is 8999122.

It is a super-2 number, since 2×22199980² = 985678224000800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196404 + ... + 196516.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^22199980 is an apocalyptic number.

22199980 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 22199980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

22199980 is an abundant number, since it is smaller than the sum of its proper divisors (32957780).

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

22199980 is a wasteful number, since it uses less digits than its factorization.

22199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 22199980 is about 4711.6854733736. The cubic root of 22199980 is about 281.0503913715.

It can be divided in two parts, 22 and 199980, that added together give a palindrome (200002).

The spelling of 22199980 in words is "twenty-two million, one hundred ninety-nine thousand, nine hundred eighty".