2219828 has 12 divisors (see below), whose sum is σ = 4183620. Its totient is φ = 1024512.

The previous prime is 2219813. The next prime is 2219831. The reversal of 2219828 is 8289122.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 1669264 = 742^2 + 1292^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2219794 and 2219803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21293 + ... + 21396.

It is an arithmetic number, because the mean of its divisors is an integer number (348635).

2^2219828 is an apocalyptic number.

It is an amenable number.

2219828 is a deficient number, since it is larger than the sum of its proper divisors (1963792).

2219828 is a wasteful number, since it uses less digits than its factorization.

2219828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42706 (or 42704 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 2219828 is about 1489.9087220364. The cubic root of 2219828 is about 130.4487058825.

The spelling of 2219828 in words is "two million, two hundred nineteen thousand, eight hundred twenty-eight".