22408992 has 144 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 6690816.

The previous prime is 22408987. The next prime is 22408993. The reversal of 22408992 is 29980422.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22408993) 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, 112509 + ... + 112707.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^22408992 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 22408992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).

22408992 is an abundant number, since it is smaller than the sum of its proper divisors (48352608).

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

22408992 is a wasteful number, since it uses less digits than its factorization.

22408992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22408992 is about 4733.8136845465. The cubic root of 22408992 is about 281.9296640639.

The spelling of 22408992 in words is "twenty-two million, four hundred eight thousand, nine hundred ninety-two".