2028743 has 4 divisors (see below), whose sum is σ = 2056608. Its totient is φ = 2000880.

The previous prime is 2028713. The next prime is 2028749. The reversal of 2028743 is 3478202.

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 2028743 - 2⁶ = 2028679 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 (2028749) 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, 13823 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (514152).

2^2028743 is an apocalyptic number.

2028743 is a deficient number, since it is larger than the sum of its proper divisors (27865).

2028743 is an equidigital number, since it uses as much as digits as its factorization.

2028743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27864.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2028743 is about 1424.3394960472. The cubic root of 2028743 is about 126.5928016558.

The spelling of 2028743 in words is "two million, twenty-eight thousand, seven hundred forty-three".