2028065 has 16 divisors (see below), whose sum is σ = 2688336. Its totient is φ = 1459200.

The previous prime is 2028053. The next prime is 2028073. The reversal of 2028065 is 5608202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1274641 + 753424 = 1129^2 + 868^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2028065 is a prime.

It is a super-2 number, since 2×2028065² = 8226095288450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2028065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2285 + ... + 3045.

It is an arithmetic number, because the mean of its divisors is an integer number (168021).

2^2028065 is an apocalyptic number.

It is an amenable number.

2028065 is a deficient number, since it is larger than the sum of its proper divisors (660271).

2028065 is a wasteful number, since it uses less digits than its factorization.

2028065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2028065 is about 1424.1014711038. The cubic root of 2028065 is about 126.5786977694.

The spelling of 2028065 in words is "two million, twenty-eight thousand, sixty-five".