2028859 has 4 divisors (see below), whose sum is σ = 2318704. Its totient is φ = 1739016.

The previous prime is 2028847. The next prime is 2028863. The reversal of 2028859 is 9588202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2028859 - 2¹⁵ = 1996091 is a prime.

It is a Duffinian number.

2028859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2028809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144912 + ... + 144925.

It is an arithmetic number, because the mean of its divisors is an integer number (579676).

2^2028859 is an apocalyptic number.

2028859 is a deficient number, since it is larger than the sum of its proper divisors (289845).

2028859 is an equidigital number, since it uses as much as digits as its factorization.

2028859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289844.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 2028859 is about 1424.3802160940. The cubic root of 2028859 is about 126.5952143953.

The spelling of 2028859 in words is "two million, twenty-eight thousand, eight hundred fifty-nine".