1328803444 has 12 divisors (see below), whose sum is σ = 2325899268. Its totient is φ = 664260800.

The previous prime is 1328803397. The next prime is 1328803447. The reversal of 1328803444 is 4443088231.

It can be written as a sum of positive squares in 2 ways, for example, as 79887844 + 1248915600 = 8938^2 + 35340^2 .

It is a super-2 number, since 2×1328803444² = 3531437185572522272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328803447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12367 + ... + 53014.

It is an arithmetic number, because the mean of its divisors is an integer number (193824939).

Almost surely, 2^1328803444 is an apocalyptic number.

It is an amenable number.

1328803444 is a deficient number, since it is larger than the sum of its proper divisors (997095824).

1328803444 is a wasteful number, since it uses less digits than its factorization.

1328803444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70466 (or 70464 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 1328803444 is about 36452.7563292544. The cubic root of 1328803444 is about 1099.3945549757.

The spelling of 1328803444 in words is "one billion, three hundred twenty-eight million, eight hundred three thousand, four hundred forty-four".