1428328 has 16 divisors (see below), whose sum is σ = 2921760. Its totient is φ = 649200.

The previous prime is 1428281. The next prime is 1428359. The reversal of 1428328 is 8238241.

It is a junction number, because it is equal to n+sod(n) for n = 1428296 and 1428305.

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 in 3 ways as a sum of consecutive naturals, for example, 8028 + ... + 8203.

It is an arithmetic number, because the mean of its divisors is an integer number (182610).

2^1428328 is an apocalyptic number.

It is an amenable number.

1428328 is an abundant number, since it is smaller than the sum of its proper divisors (1493432).

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

1428328 is a wasteful number, since it uses less digits than its factorization.

1428328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16248 (or 16244 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 1428328 is about 1195.1267715184. The cubic root of 1428328 is about 112.6183905930.

The spelling of 1428328 in words is "one million, four hundred twenty-eight thousand, three hundred twenty-eight".