2028705 has 24 divisors (see below), whose sum is σ = 3736512. Its totient is φ = 920736.

The previous prime is 2028703. The next prime is 2028707. The reversal of 2028705 is 5078202.

It is an interprime number because it is at equal distance from previous prime (2028703) and next prime (2028707).

It is not a de Polignac number, because 2028705 - 2¹ = 2028703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2028701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14526 + ... + 14664.

It is an arithmetic number, because the mean of its divisors is an integer number (155688).

2^2028705 is an apocalyptic number.

It is an amenable number.

2028705 is a deficient number, since it is larger than the sum of its proper divisors (1707807).

2028705 is an equidigital number, since it uses as much as digits as its factorization.

2028705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 2028705 is about 1424.3261564684. The cubic root of 2028705 is about 126.5920112556.

The spelling of 2028705 in words is "two million, twenty-eight thousand, seven hundred five".