22540992 has 112 divisors (see below), whose sum is σ = 64861440. Its totient is φ = 6884352.

The previous prime is 22540981. The next prime is 22540993. The reversal of 22540992 is 29904522.

It is not an unprimeable number, because it can be changed into a prime (22540993) 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 15 ways as a sum of consecutive naturals, for example, 134893 + ... + 135059.

It is an arithmetic number, because the mean of its divisors is an integer number (579120).

Almost surely, 2^22540992 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 22540992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32430720).

22540992 is an abundant number, since it is smaller than the sum of its proper divisors (42320448).

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

22540992 is a wasteful number, since it uses less digits than its factorization.

22540992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 22540992 is about 4747.7354601957. The cubic root of 22540992 is about 282.4821488707.

It can be divided in two parts, 22540 and 992, that added together give a palindrome (23532).

The spelling of 22540992 in words is "twenty-two million, five hundred forty thousand, nine hundred ninety-two".