22330428 has 12 divisors (see below), whose sum is σ = 52104360. Its totient is φ = 7443472.

The previous prime is 22330417. The next prime is 22330457. The reversal of 22330428 is 82403322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22330398 and 22330407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930423 + ... + 930446.

It is an arithmetic number, because the mean of its divisors is an integer number (4342030).

Almost surely, 2^22330428 is an apocalyptic number.

It is an amenable number.

22330428 is an abundant number, since it is smaller than the sum of its proper divisors (29773932).

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

22330428 is a wasteful number, since it uses less digits than its factorization.

22330428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860876 (or 1860874 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 22330428 is about 4725.5082266355. The cubic root of 22330428 is about 281.5998045529.

The spelling of 22330428 in words is "twenty-two million, three hundred thirty thousand, four hundred twenty-eight".