22019028 has 12 divisors (see below), whose sum is σ = 51377760. Its totient is φ = 7339672.

The previous prime is 22019003. The next prime is 22019047. The reversal of 22019028 is 82091022.

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 = 22018989 and 22019007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917448 + ... + 917471.

It is an arithmetic number, because the mean of its divisors is an integer number (4281480).

Almost surely, 2^22019028 is an apocalyptic number.

It is an amenable number.

22019028 is an abundant number, since it is smaller than the sum of its proper divisors (29358732).

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

22019028 is a wasteful number, since it uses less digits than its factorization.

22019028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834926 (or 1834924 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 22019028 is about 4692.4437130348. The cubic root of 22019028 is about 280.2846934296.

The spelling of 22019028 in words is "twenty-two million, nineteen thousand, twenty-eight".