3257321812 has 24 divisors (see below), whose sum is σ = 5824792512. Its totient is φ = 1593446400.

The previous prime is 3257321779. The next prime is 3257321813. The reversal of 3257321812 is 2181237523.

It is a super-2 number, since 2×3257321812² = 21220290773861926688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3257321813) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6573 + ... + 80980.

It is an arithmetic number, because the mean of its divisors is an integer number (242699688).

Almost surely, 2^3257321812 is an apocalyptic number.

It is an amenable number.

3257321812 is a deficient number, since it is larger than the sum of its proper divisors (2567470700).

3257321812 is a wasteful number, since it uses less digits than its factorization.

3257321812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87759 (or 87757 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 3257321812 is about 57072.9516671426. The cubic root of 3257321812 is about 1482.3595506536.

The spelling of 3257321812 in words is "three billion, two hundred fifty-seven million, three hundred twenty-one thousand, eight hundred twelve".