22808740 has 48 divisors (see below), whose sum is σ = 50843520. Its totient is φ = 8570880.

The previous prime is 22808671. The next prime is 22808749. The reversal of 22808740 is 4780822.

It is not an unprimeable number, because it can be changed into a prime (22808749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73185 + ... + 73495.

It is an arithmetic number, because the mean of its divisors is an integer number (1059240).

Almost surely, 2^22808740 is an apocalyptic number.

22808740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22808740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25421760).

22808740 is an abundant number, since it is smaller than the sum of its proper divisors (28034780).

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

22808740 is a wasteful number, since it uses less digits than its factorization.

22808740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 22808740 is about 4775.8496626255. The cubic root of 22808740 is about 283.5962158399.

The spelling of 22808740 in words is "twenty-two million, eight hundred eight thousand, seven hundred forty".