22409880 has 96 divisors (see below), whose sum is σ = 69510960. Its totient is φ = 5779200.

The previous prime is 22409879. The next prime is 22409887. The reversal of 22409880 is 8890422.

It is a super-2 number, since 2×22409880² = 1004405443228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22409887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221830 + ... + 221930.

Almost surely, 2^22409880 is an apocalyptic number.

22409880 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 22409880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34755480).

22409880 is an abundant number, since it is smaller than the sum of its proper divisors (47101080).

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

22409880 is a wasteful number, since it uses less digits than its factorization.

22409880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 22409880 is about 4733.9074769159. The cubic root of 22409880 is about 281.9333880190.

The spelling of 22409880 in words is "twenty-two million, four hundred nine thousand, eight hundred eighty".