1028879 has 4 divisors (see below), whose sum is σ = 1039584. Its totient is φ = 1018176.

The previous prime is 1028873. The next prime is 1028893. The reversal of 1028879 is 9788201.

It is a happy number.

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 1028879 - 2¹² = 1024783 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 (1028873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5207 + ... + 5400.

It is an arithmetic number, because the mean of its divisors is an integer number (259896).

2^1028879 is an apocalyptic number.

1028879 is a deficient number, since it is larger than the sum of its proper divisors (10705).

1028879 is an equidigital number, since it uses as much as digits as its factorization.

1028879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1028879 is about 1014.3367290994. The cubic root of 1028879 is about 100.9535125737.

The spelling of 1028879 in words is "one million, twenty-eight thousand, eight hundred seventy-nine".