22082728 has 32 divisors (see below), whose sum is σ = 44058600. Its totient is φ = 10340352.

The previous prime is 22082707. The next prime is 22082743. The reversal of 22082728 is 82728022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21921124 + 161604 = 4682^2 + 402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22082728.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53788 + ... + 54196.

Almost surely, 2^22082728 is an apocalyptic number.

It is an amenable number.

22082728 is a deficient number, since it is larger than the sum of its proper divisors (21975872).

22082728 is a wasteful number, since it uses less digits than its factorization.

22082728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 825 counting only the distinct ones).

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

The square root of 22082728 is about 4699.2263192998. The cubic root of 22082728 is about 280.5547166346.

The spelling of 22082728 in words is "twenty-two million, eighty-two thousand, seven hundred twenty-eight".