1328280 has 32 divisors (see below), whose sum is σ = 3985200. Its totient is φ = 354176.

The previous prime is 1328279. The next prime is 1328297. The reversal of 1328280 is 828231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1328280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5415 + ... + 5654.

2^1328280 is an apocalyptic number.

1328280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328280 is an abundant number, since it is smaller than the sum of its proper divisors (2656920).

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

1328280 is a wasteful number, since it uses less digits than its factorization.

1328280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083 (or 11079 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1328280 is about 1152.5103036416. The cubic root of 1328280 is about 109.9250177700.

The spelling of 1328280 in words is "one million, three hundred twenty-eight thousand, two hundred eighty".