2028775 has 12 divisors (see below), whose sum is σ = 2875312. Its totient is φ = 1391040.

The previous prime is 2028773. The next prime is 2028779. The reversal of 2028775 is 5778202.

It is not a de Polignac number, because 2028775 - 2¹ = 2028773 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5622 + ... + 5971.

2^2028775 is an apocalyptic number.

2028775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2028775 is a deficient number, since it is larger than the sum of its proper divisors (846537).

2028775 is a wasteful number, since it uses less digits than its factorization.

2028775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11610 (or 11605 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2028775 is about 1424.3507292798. The cubic root of 2028775 is about 126.5934672483.

The spelling of 2028775 in words is "two million, twenty-eight thousand, seven hundred seventy-five".