3281276328 has 128 divisors (see below), whose sum is σ = 9231045120. Its totient is φ = 963221760.

The previous prime is 3281276321. The next prime is 3281276329. The reversal of 3281276328 is 8236721823.

It is a self number, because there is not a number n which added to its sum of digits gives 3281276328.

It is not an unprimeable number, because it can be changed into a prime (3281276321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2763751 + ... + 2764937.

It is an arithmetic number, because the mean of its divisors is an integer number (72117540).

Almost surely, 2^3281276328 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 3281276328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4615522560).

3281276328 is an abundant number, since it is smaller than the sum of its proper divisors (5949768792).

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

3281276328 is a wasteful number, since it uses less digits than its factorization.

3281276328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1523 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 3281276328 is about 57282.4259961116. The cubic root of 3281276328 is about 1485.9844625694.

The spelling of 3281276328 in words is "three billion, two hundred eighty-one million, two hundred seventy-six thousand, three hundred twenty-eight".