1328081832 has 320 divisors, whose sum is σ = 4753267200. Its totient is φ = 336389760.

The previous prime is 1328081831. The next prime is 1328081851. The reversal of 1328081832 is 2381808231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1328081831) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2145219 + ... + 2145837.

It is an arithmetic number, because the mean of its divisors is an integer number (14853960).

Almost surely, 2^1328081832 is an apocalyptic number.

1328081832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328081832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376633600).

1328081832 is an abundant number, since it is smaller than the sum of its proper divisors (3425185368).

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

1328081832 is a wasteful number, since it uses less digits than its factorization.

1328081832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1328081832 is about 36442.8570778966. The cubic root of 1328081832 is about 1099.1955087439.

The spelling of 1328081832 in words is "one billion, three hundred twenty-eight million, eighty-one thousand, eight hundred thirty-two".