22318830 has 48 divisors (see below), whose sum is σ = 59136480. Its totient is φ = 5838144.

The previous prime is 22318823. The next prime is 22318831. The reversal of 22318830 is 3881322.

It is a super-3 number, since 3×22318830³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22318794 and 22318803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22318831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2431 + ... + 7109.

It is an arithmetic number, because the mean of its divisors is an integer number (1232010).

Almost surely, 2^22318830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22318830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29568240).

22318830 is an abundant number, since it is smaller than the sum of its proper divisors (36817650).

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

22318830 is a wasteful number, since it uses less digits than its factorization.

22318830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745 (or 4742 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22318830 is about 4724.2808976605. The cubic root of 22318830 is about 281.5510435808.

The spelling of 22318830 in words is "twenty-two million, three hundred eighteen thousand, eight hundred thirty".