22199040 has 216 divisors, whose sum is σ = 80353728. Its totient is φ = 5652480.

The previous prime is 22199033. The next prime is 22199077. The reversal of 22199040 is 4099122.

It is a junction number, because it is equal to n+sod(n) for n = 22198995 and 22199013.

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, 472297 + ... + 472343.

It is an arithmetic number, because the mean of its divisors is an integer number (372008).

Almost surely, 2^22199040 is an apocalyptic number.

22199040 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 22199040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176864).

22199040 is an abundant number, since it is smaller than the sum of its proper divisors (58154688).

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

22199040 is a wasteful number, since it uses less digits than its factorization.

22199040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 22199040 is about 4711.5857203281. The cubic root of 22199040 is about 281.0464245346.

The spelling of 22199040 in words is "twenty-two million, one hundred ninety-nine thousand, forty".