3249581328 has 200 divisors, whose sum is σ = 10813682880. Its totient is φ = 922855680.

The previous prime is 3249581323. The next prime is 3249581329. The reversal of 3249581328 is 8231859423.

3249581328 is a `hidden beast` number, since 3 + 2 + 49 + 581 + 3 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (3249581323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1641043 + ... + 1643021.

Almost surely, 2^3249581328 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 3249581328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5406841440).

3249581328 is an abundant number, since it is smaller than the sum of its proper divisors (7564101552).

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

3249581328 is a wasteful number, since it uses less digits than its factorization.

3249581328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2172 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 3249581328 is about 57005.0991403401. The cubic root of 3249581328 is about 1481.1844256182.

The spelling of 3249581328 in words is "three billion, two hundred forty-nine million, five hundred eighty-one thousand, three hundred twenty-eight".