3261789432 has 128 divisors (see below), whose sum is σ = 10404576000. Its totient is φ = 936385920.

The previous prime is 3261789397. The next prime is 3261789463. The reversal of 3261789432 is 2349871623.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 9018 + ... + 81270.

It is an arithmetic number, because the mean of its divisors is an integer number (81285750).

Almost surely, 2^3261789432 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 3261789432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5202288000).

3261789432 is an abundant number, since it is smaller than the sum of its proper divisors (7142786568).

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

3261789432 is a wasteful number, since it uses less digits than its factorization.

3261789432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72298 (or 72288 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 3261789432 is about 57112.0778119655. The cubic root of 3261789432 is about 1483.0369572353.

The spelling of 3261789432 in words is "three billion, two hundred sixty-one million, seven hundred eighty-nine thousand, four hundred thirty-two".