2028111 has 4 divisors (see below), whose sum is σ = 2704152. Its totient is φ = 1352072.

The previous prime is 2028109. The next prime is 2028119. The reversal of 2028111 is 1118202.

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 2028111 - 2¹ = 2028109 is a prime.

It is a super-2 number, since 2×2028111² = 8226468456642, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028119) 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, 338016 + ... + 338021.

It is an arithmetic number, because the mean of its divisors is an integer number (676038).

2^2028111 is an apocalyptic number.

2028111 is a deficient number, since it is larger than the sum of its proper divisors (676041).

2028111 is an equidigital number, since it uses as much as digits as its factorization.

2028111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676040.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2028111 is about 1424.1176215468. The cubic root of 2028111 is about 126.5796547696.

Subtracting from 2028111 its reverse (1118202), we obtain a palindrome (909909).

The spelling of 2028111 in words is "two million, twenty-eight thousand, one hundred eleven".