22808436 has 96 divisors (see below), whose sum is σ = 66232320. Its totient is φ = 5961600.

The previous prime is 22808419. The next prime is 22808459. The reversal of 22808436 is 63480822.

It is a junction number, because it is equal to n+sod(n) for n = 22808397 and 22808406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49246 + ... + 49706.

It is an arithmetic number, because the mean of its divisors is an integer number (689920).

Almost surely, 2^22808436 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 22808436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33116160).

22808436 is an abundant number, since it is smaller than the sum of its proper divisors (43423884).

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

22808436 is a wasteful number, since it uses less digits than its factorization.

22808436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 22808436 is about 4775.8178357220. The cubic root of 22808436 is about 283.5949558897.

The spelling of 22808436 in words is "twenty-two million, eight hundred eight thousand, four hundred thirty-six".