3261421344 has 96 divisors (see below), whose sum is σ = 9141479424. Its totient is φ = 1015660800.

The previous prime is 3261421337. The next prime is 3261421369. The reversal of 3261421344 is 4431241623.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77769 + ... + 112119.

It is an arithmetic number, because the mean of its divisors is an integer number (95223744).

Almost surely, 2^3261421344 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 3261421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4570739712).

3261421344 is an abundant number, since it is smaller than the sum of its proper divisors (5880058080).

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

3261421344 is a wasteful number, since it uses less digits than its factorization.

3261421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34430 (or 34422 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 3261421344 is about 57108.8552152816. The cubic root of 3261421344 is about 1482.9811689781.

Adding to 3261421344 its reverse (4431241623), we get a palindrome (7692662967).

The spelling of 3261421344 in words is "three billion, two hundred sixty-one million, four hundred twenty-one thousand, three hundred forty-four".