3321203328 has 144 divisors (see below), whose sum is σ = 9707732190. Its totient is φ = 1089884160.

The previous prime is 3321203297. The next prime is 3321203329. The reversal of 3321203328 is 8233021233.

3321203328 is a `hidden beast` number, since 3 + 321 + 2 + 0 + 332 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2872102464 + 449100864 = 53592^2 + 21192^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×3321203328² = 22060783091836551168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3321203329) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6138738 + ... + 6139278.

Almost surely, 2^3321203328 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 3321203328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4853866095).

3321203328 is an abundant number, since it is smaller than the sum of its proper divisors (6386528862).

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

3321203328 is an equidigital number, since it uses as much as digits as its factorization.

3321203328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 3321203328 is about 57629.8822487084. The cubic root of 3321203328 is about 1491.9873976803.

The spelling of 3321203328 in words is "three billion, three hundred twenty-one million, two hundred three thousand, three hundred twenty-eight".