1028767 has 4 divisors (see below), whose sum is σ = 1073520. Its totient is φ = 984016.

The previous prime is 1028761. The next prime is 1028773. The reversal of 1028767 is 7678201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1028761) and next prime (1028773).

It is a cyclic number.

It is not a de Polignac number, because 1028767 - 2¹⁹ = 504479 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028761) 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, 22342 + ... + 22387.

It is an arithmetic number, because the mean of its divisors is an integer number (268380).

2^1028767 is an apocalyptic number.

1028767 is a deficient number, since it is larger than the sum of its proper divisors (44753).

1028767 is an equidigital number, since it uses as much as digits as its factorization.

1028767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44752.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1028767 is about 1014.2815191060. The cubic root of 1028767 is about 100.9498492976.

The spelling of 1028767 in words is "one million, twenty-eight thousand, seven hundred sixty-seven".