22490136 has 96 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 7156512.

The previous prime is 22490123. The next prime is 22490137. The reversal of 22490136 is 63109422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22490137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44461 + ... + 44963.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^22490136 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 22490136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

22490136 is an abundant number, since it is smaller than the sum of its proper divisors (43554024).

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

22490136 is a wasteful number, since it uses less digits than its factorization.

22490136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22490136 is about 4742.3766193756. The cubic root of 22490136 is about 282.2695476146.

Adding to 22490136 its reverse (63109422), we get a palindrome (85599558).

The spelling of 22490136 in words is "twenty-two million, four hundred ninety thousand, one hundred thirty-six".