2028105 has 32 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 1062720.

The previous prime is 2028101. The next prime is 2028107. The reversal of 2028105 is 5018202.

It is not a de Polignac number, because 2028105 - 2² = 2028101 is a prime.

It is a super-2 number, since 2×2028105² = 8226419782050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2028101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11115 + ... + 11295.

It is an arithmetic number, because the mean of its divisors is an integer number (114660).

2^2028105 is an apocalyptic number.

It is an amenable number.

2028105 is a deficient number, since it is larger than the sum of its proper divisors (1641015).

2028105 is a wasteful number, since it uses less digits than its factorization.

2028105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2028105 is about 1424.1155149776. The cubic root of 2028105 is about 126.5795299443.

The spelling of 2028105 in words is "two million, twenty-eight thousand, one hundred five".