22030128 has 60 divisors (see below), whose sum is σ = 62722920. Its totient is φ = 7216128.

The previous prime is 22030121. The next prime is 22030153. The reversal of 22030128 is 82103022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 22030128.

It is not an unprimeable number, because it can be changed into a prime (22030121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7200 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (1045382).

Almost surely, 2^22030128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22030128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31361460).

22030128 is an abundant number, since it is smaller than the sum of its proper divisors (40692792).

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

22030128 is a wasteful number, since it uses less digits than its factorization.

22030128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2657 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22030128 is about 4693.6263166128. The cubic root of 22030128 is about 280.3317835714.

The spelling of 22030128 in words is "twenty-two million, thirty thousand, one hundred twenty-eight".