2028749 has 2 divisors, whose sum is σ = 2028750. Its totient is φ = 2028748.

The previous prime is 2028713. The next prime is 2028757. The reversal of 2028749 is 9478202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 940900 = 1043^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028749 - 2⁸ = 2028493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2028779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014374 + 1014375.

It is an arithmetic number, because the mean of its divisors is an integer number (1014375).

2^2028749 is an apocalyptic number.

It is an amenable number.

2028749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2028749 is an equidigital number, since it uses as much as digits as its factorization.

2028749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2028749 is about 1424.3416022851. The cubic root of 2028749 is about 126.5929264550.

The spelling of 2028749 in words is "two million, twenty-eight thousand, seven hundred forty-nine".