3221323776 has 256 divisors, whose sum is σ = 10443657600. Its totient is φ = 973209600.

The previous prime is 3221323771. The next prime is 3221323841. The reversal of 3221323776 is 6773231223.

3221323776 is a `hidden beast` number, since 322 + 1 + 323 + 7 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (256).

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

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3221323776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221323771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9731931 + ... + 9732261.

Almost surely, 2^3221323776 is an apocalyptic number.

3221323776 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221323776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5221828800).

3221323776 is an abundant number, since it is smaller than the sum of its proper divisors (7222333824).

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

3221323776 is an equidigital number, since it uses as much as digits as its factorization.

3221323776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 347 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 3221323776 is about 56756.7068812136. The cubic root of 3221323776 is about 1476.8785832750.

Adding to 3221323776 its reverse (6773231223), we get a palindrome (9994554999).

The spelling of 3221323776 in words is "three billion, two hundred twenty-one million, three hundred twenty-three thousand, seven hundred seventy-six".