2169028 has 12 divisors (see below), whose sum is σ = 3806460. Its totient is φ = 1081472.

The previous prime is 2169007. The next prime is 2169029. The reversal of 2169028 is 8209612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 1557504 = 782^2 + 1248^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2168987 and 2169005.

It is not an unprimeable number, because it can be changed into a prime (2169029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800 + ... + 2752.

It is an arithmetic number, because the mean of its divisors is an integer number (317205).

2^2169028 is an apocalyptic number.

It is an amenable number.

2169028 is a deficient number, since it is larger than the sum of its proper divisors (1637432).

2169028 is a wasteful number, since it uses less digits than its factorization.

2169028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2169028 is about 1472.7620310152. The cubic root of 2169028 is about 129.4459258544.

The spelling of 2169028 in words is "two million, one hundred sixty-nine thousand, twenty-eight".