22285780 has 36 divisors (see below), whose sum is σ = 51447060. Its totient is φ = 8103040.

The previous prime is 22285777. The next prime is 22285787. The reversal of 22285780 is 8758222.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 16744464 = 2354^2 + 4092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22285787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2185 + ... + 7024.

It is an arithmetic number, because the mean of its divisors is an integer number (1429085).

Almost surely, 2^22285780 is an apocalyptic number.

22285780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22285780 is an abundant number, since it is smaller than the sum of its proper divisors (29161280).

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

22285780 is a wasteful number, since it uses less digits than its factorization.

22285780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240 (or 9227 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 22285780 is about 4720.7817149282. The cubic root of 22285780 is about 281.4120001678.

It can be divided in two parts, 2228 and 5780, that added together give a palindrome (8008).

The spelling of 22285780 in words is "twenty-two million, two hundred eighty-five thousand, seven hundred eighty".