22028330 has 16 divisors (see below), whose sum is σ = 39781800. Its totient is φ = 8782272.

The previous prime is 22028323. The next prime is 22028351. The reversal of 22028330 is 3382022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 5536609 = 4061^2 + 2353^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 6644.

Almost surely, 2^22028330 is an apocalyptic number.

22028330 is a deficient number, since it is larger than the sum of its proper divisors (17753470).

22028330 is a wasteful number, since it uses less digits than its factorization.

22028330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7273.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22028330 is about 4693.4347763658. The cubic root of 22028330 is about 280.3241568906.

The spelling of 22028330 in words is "twenty-two million, twenty-eight thousand, three hundred thirty".