3243491172 has 72 divisors (see below), whose sum is σ = 8353800000. Its totient is φ = 1060855488.

The previous prime is 3243491143. The next prime is 3243491203. The reversal of 3243491172 is 2711943423.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 646329 + ... + 651327.

It is an arithmetic number, because the mean of its divisors is an integer number (116025000).

Almost surely, 2^3243491172 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 3243491172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4176900000).

3243491172 is an abundant number, since it is smaller than the sum of its proper divisors (5110308828).

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

3243491172 is a wasteful number, since it uses less digits than its factorization.

3243491172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345 (or 5340 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 3243491172 is about 56951.6564464986. The cubic root of 3243491172 is about 1480.2585334817.

The spelling of 3243491172 in words is "three billion, two hundred forty-three million, four hundred ninety-one thousand, one hundred seventy-two".