1028320 has 24 divisors (see below), whose sum is σ = 2429784. Its totient is φ = 411264.

The previous prime is 1028317. The next prime is 1028327. The reversal of 1028320 is 238201.

It is a happy number.

1028320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1028294 and 1028303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028327) 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, 3054 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (101241).

2^1028320 is an apocalyptic number.

1028320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028320 is an abundant number, since it is smaller than the sum of its proper divisors (1401464).

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

1028320 is an equidigital number, since it uses as much as digits as its factorization.

1028320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442 (or 6434 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1028320 is about 1014.0611421408. The cubic root of 1028320 is about 100.9352262521.

The spelling of 1028320 in words is "one million, twenty-eight thousand, three hundred twenty".