22428530 has 16 divisors (see below), whose sum is σ = 40584024. Its totient is φ = 8924160.

The previous prime is 22428503. The next prime is 22428533. The reversal of 22428530 is 3582422.

It can be written as a sum of positive squares in 4 ways, for example, as 9690769 + 12737761 = 3113^2 + 3569^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22428530.

It is not an unprimeable number, because it can be changed into a prime (22428533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3881 + ... + 7740.

Almost surely, 2^22428530 is an apocalyptic number.

22428530 is a deficient number, since it is larger than the sum of its proper divisors (18155494).

22428530 is a wasteful number, since it uses less digits than its factorization.

22428530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11821.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 22428530 is about 4735.8768987380. The cubic root of 22428530 is about 282.0115767425.

The spelling of 22428530 in words is "twenty-two million, four hundred twenty-eight thousand, five hundred thirty".