2028751 has 4 divisors (see below), whose sum is σ = 2034432. Its totient is φ = 2023072.

The previous prime is 2028749. The next prime is 2028757. The reversal of 2028751 is 1578202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1578202 = 2 ⋅789101.

It is a cyclic number.

It is not a de Polignac number, because 2028751 - 2¹ = 2028749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028757) 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, 2266 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (508608).

2^2028751 is an apocalyptic number.

2028751 is a deficient number, since it is larger than the sum of its proper divisors (5681).

2028751 is an equidigital number, since it uses as much as digits as its factorization.

2028751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2028751 is about 1424.3423043637. The cubic root of 2028751 is about 126.5929680546.

The spelling of 2028751 in words is "two million, twenty-eight thousand, seven hundred fifty-one".