1328333568 has 72 divisors (see below), whose sum is σ = 3545546928. Its totient is φ = 441495552.

The previous prime is 1328333563. The next prime is 1328333593. The reversal of 1328333568 is 8653338231.

It is a happy number.

It is a super-2 number, since 2×1328333568² = 3528940135751221248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328333563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284146 + ... + 288782.

Almost surely, 2^1328333568 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 1328333568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772773464).

1328333568 is an abundant number, since it is smaller than the sum of its proper divisors (2217213360).

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

1328333568 is an equidigital number, since it uses as much as digits as its factorization.

1328333568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5015 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 1328333568 is about 36446.3107598012. The cubic root of 1328333568 is about 1099.2649546652.

The spelling of 1328333568 in words is "one billion, three hundred twenty-eight million, three hundred thirty-three thousand, five hundred sixty-eight".