22961790 has 48 divisors (see below), whose sum is σ = 60304608. Its totient is φ = 6061248.

The previous prime is 22961779. The next prime is 22961791. The reversal of 22961790 is 9716922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22961791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8032 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (1256346).

Almost surely, 2^22961790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22961790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30152304).

22961790 is an abundant number, since it is smaller than the sum of its proper divisors (37342818).

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

22961790 is a wasteful number, since it uses less digits than its factorization.

22961790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 22961790 is about 4791.8461995352. The cubic root of 22961790 is about 284.2291264089.

The spelling of 22961790 in words is "twenty-two million, nine hundred sixty-one thousand, seven hundred ninety".