22080640 has 32 divisors (see below), whose sum is σ = 52788060. Its totient is φ = 8832000.

The previous prime is 22080631. The next prime is 22080677. The reversal of 22080640 is 4608022.

It can be written as a sum of positive squares in 2 ways, for example, as 22052416 + 28224 = 4696^2 + 168^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16611 + ... + 17890.

Almost surely, 2^22080640 is an apocalyptic number.

22080640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22080640 is an abundant number, since it is smaller than the sum of its proper divisors (30707420).

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

22080640 is an equidigital number, since it uses as much as digits as its factorization.

22080640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34520 (or 34508 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 22080640 is about 4699.0041498173. The cubic root of 22080640 is about 280.5458738758.

Adding to 22080640 its reverse (4608022), we get a palindrome (26688662).

The spelling of 22080640 in words is "twenty-two million, eighty thousand, six hundred forty".