1028947 has 4 divisors (see below), whose sum is σ = 1052920. Its totient is φ = 1004976.

The previous prime is 1028941. The next prime is 1028953. The reversal of 1028947 is 7498201.

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 (1028941) and next prime (1028953).

It is a cyclic number.

It is not a de Polignac number, because 1028947 - 2³ = 1028939 is a prime.

It is an Ulam number.

It is a Duffinian number.

1028947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1028941) 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, 11922 + ... + 12007.

It is an arithmetic number, because the mean of its divisors is an integer number (263230).

2^1028947 is an apocalyptic number.

1028947 is a deficient number, since it is larger than the sum of its proper divisors (23973).

1028947 is an equidigital number, since it uses as much as digits as its factorization.

1028947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23972.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1028947 is about 1014.3702479864. The cubic root of 1028947 is about 100.9557365759.

The spelling of 1028947 in words is "one million, twenty-eight thousand, nine hundred forty-seven".