22910538 has 48 divisors (see below), whose sum is σ = 53762400. Its totient is φ = 6489504.

The previous prime is 22910497. The next prime is 22910557. The reversal of 22910538 is 83501922.

It is a happy number.

It is an unprimeable number.

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, 43545 + ... + 44067.

It is an arithmetic number, because the mean of its divisors is an integer number (1120050).

Almost surely, 2^22910538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22910538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26881200).

22910538 is an abundant number, since it is smaller than the sum of its proper divisors (30851862).

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

22910538 is a wasteful number, since it uses less digits than its factorization.

22910538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 22910538 is about 4786.4953776223. The cubic root of 22910538 is about 284.0174971036.

The spelling of 22910538 in words is "twenty-two million, nine hundred ten thousand, five hundred thirty-eight".