1328768 has 32 divisors (see below), whose sum is σ = 3027360. Its totient is φ = 569088.

The previous prime is 1328749. The next prime is 1328777. The reversal of 1328768 is 8678231.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (94605).

2^1328768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513680).

1328768 is an abundant number, since it is smaller than the sum of its proper divisors (1698592).

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

1328768 is an equidigital number, since it uses as much as digits as its factorization.

1328768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1492 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1328768 is about 1152.7219959730. The cubic root of 1328768 is about 109.9384779944.

The spelling of 1328768 in words is "one million, three hundred twenty-eight thousand, seven hundred sixty-eight".