1028712 has 16 divisors (see below), whose sum is σ = 2571840. Its totient is φ = 342896.

The previous prime is 1028683. The next prime is 1028737. The reversal of 1028712 is 2178201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21408 + ... + 21455.

It is an arithmetic number, because the mean of its divisors is an integer number (160740).

2^1028712 is an apocalyptic number.

1028712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1028712 is an abundant number, since it is smaller than the sum of its proper divisors (1543128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028712 is a wasteful number, since it uses less digits than its factorization.

1028712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42872 (or 42868 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1028712 is about 1014.2544059554. The cubic root of 1028712 is about 100.9480502700.

The spelling of 1028712 in words is "one million, twenty-eight thousand, seven hundred twelve".