2028660 has 24 divisors (see below), whose sum is σ = 5680416. Its totient is φ = 540960.

The previous prime is 2028647. The next prime is 2028667. The reversal of 2028660 is 668202.

It is a super-2 number, since 2×2028660² = 8230922791200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2028660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16846 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (236684).

2^2028660 is an apocalyptic number.

2028660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028660 is an abundant number, since it is smaller than the sum of its proper divisors (3651756).

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

2028660 is a wasteful number, since it uses less digits than its factorization.

2028660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33823 (or 33821 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2028660 is about 1424.3103594372. The cubic root of 2028660 is about 126.5910752427.

It can be divided in two parts, 20 and 28660, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 2028660 in words is "two million, twenty-eight thousand, six hundred sixty".