22808720 has 40 divisors (see below), whose sum is σ = 57853440. Its totient is φ = 8293760.

The previous prime is 22808671. The next prime is 22808749. The reversal of 22808720 is 2780822.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12080 + ... + 13839.

It is an arithmetic number, because the mean of its divisors is an integer number (1446336).

Almost surely, 2^22808720 is an apocalyptic number.

22808720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22808720 is an abundant number, since it is smaller than the sum of its proper divisors (35044720).

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

22808720 is a wasteful number, since it uses less digits than its factorization.

22808720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25943 (or 25937 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 22808720 is about 4775.8475687568. The cubic root of 22808720 is about 283.5961329488.

The spelling of 22808720 in words is "twenty-two million, eight hundred eight thousand, seven hundred twenty".