22628530 has 16 divisors (see below), whose sum is σ = 43127640. Its totient is φ = 8518912.

The previous prime is 22628521. The next prime is 22628531. The reversal of 22628530 is 3582622.

It can be written as a sum of positive squares in 4 ways, for example, as 21650409 + 978121 = 4653^2 + 989^2 .

It is not an unprimeable number, because it can be changed into a prime (22628531) 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 7 ways as a sum of consecutive naturals, for example, 66385 + ... + 66724.

Almost surely, 2^22628530 is an apocalyptic number.

22628530 is a deficient number, since it is larger than the sum of its proper divisors (20499110).

22628530 is a wasteful number, since it uses less digits than its factorization.

22628530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133133.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 22628530 is about 4756.9454484995. The cubic root of 22628530 is about 282.8473499070.

The spelling of 22628530 in words is "twenty-two million, six hundred twenty-eight thousand, five hundred thirty".