1328432 has 40 divisors (see below), whose sum is σ = 3050400. Its totient is φ = 548352.

The previous prime is 1328417. The next prime is 1328447. The reversal of 1328432 is 2348231.

It is an interprime number because it is at equal distance from previous prime (1328417) and next prime (1328447).

It is a junction number, because it is equal to n+sod(n) for n = 1328398 and 1328407.

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, 3044 + ... + 3452.

It is an arithmetic number, because the mean of its divisors is an integer number (76260).

2^1328432 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 1328432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1525200).

1328432 is an abundant number, since it is smaller than the sum of its proper divisors (1721968).

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

1328432 is a wasteful number, since it uses less digits than its factorization.

1328432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1328432 is about 1152.5762447665. The cubic root of 1328432 is about 109.9292106524.

The spelling of 1328432 in words is "one million, three hundred twenty-eight thousand, four hundred thirty-two".