1328964812 has 12 divisors (see below), whose sum is σ = 2657929680. Its totient is φ = 569556336.

The previous prime is 1328964811. The next prime is 1328964827. The reversal of 1328964812 is 2184698231.

It is a happy number.

1328964812 is an admirable number.

It is a super-2 number, since 2×1328964812² = 3532294943068390688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1328964811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23731487 + ... + 23731542.

It is an arithmetic number, because the mean of its divisors is an integer number (221494140).

Almost surely, 2^1328964812 is an apocalyptic number.

It is an amenable number.

1328964812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1328964812 is a wasteful number, since it uses less digits than its factorization.

1328964812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47463040 (or 47463038 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 1328964812 is about 36454.9696474980. The cubic root of 1328964812 is about 1099.4390561446.

The spelling of 1328964812 in words is "one billion, three hundred twenty-eight million, nine hundred sixty-four thousand, eight hundred twelve".