1028816 has 10 divisors (see below), whose sum is σ = 1993362. Its totient is φ = 514400.

The previous prime is 1028809. The next prime is 1028837. The reversal of 1028816 is 6188201.

It can be written as a sum of positive squares in only one way, i.e., 817216 + 211600 = 904^2 + 460^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 32135 + ... + 32166.

2^1028816 is an apocalyptic number.

1028816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1028816 is a deficient number, since it is larger than the sum of its proper divisors (964546).

1028816 is an equidigital number, since it uses as much as digits as its factorization.

1028816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64309 (or 64303 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1028816 is about 1014.3056738479. The cubic root of 1028816 is about 100.9514520136.

The spelling of 1028816 in words is "one million, twenty-eight thousand, eight hundred sixteen".