1329387312 has 120 divisors (see below), whose sum is σ = 3863349952. Its totient is φ = 393402240.

The previous prime is 1329387299. The next prime is 1329387341. The reversal of 1329387312 is 2137839231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247083 + ... + 252405.

Almost surely, 2^1329387312 is an apocalyptic number.

1329387312 is a gapful number since it is divisible by the number (12) 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 1329387312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931674976).

1329387312 is an abundant number, since it is smaller than the sum of its proper divisors (2533962640).

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

1329387312 is a wasteful number, since it uses less digits than its factorization.

1329387312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399 (or 5382 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 1329387312 is about 36460.7640073545. The cubic root of 1329387312 is about 1099.5555537826. Note that the first 5 decimals are identical.

The spelling of 1329387312 in words is "one billion, three hundred twenty-nine million, three hundred eighty-seven thousand, three hundred twelve".