8281328788 has 6 divisors (see below), whose sum is σ = 14492325386. Its totient is φ = 4140664392.

The previous prime is 8281328777. The next prime is 8281328791. The reversal of 8281328788 is 8878231828.

It can be written as a sum of positive squares in only one way, i.e., 7953429124 + 327899664 = 89182^2 + 18108^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1035166095 + ... + 1035166102.

Almost surely, 2^8281328788 is an apocalyptic number.

It is an amenable number.

8281328788 is a deficient number, since it is larger than the sum of its proper divisors (6210996598).

8281328788 is a wasteful number, since it uses less digits than its factorization.

8281328788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070332201 (or 2070332199 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 55.

The square root of 8281328788 is about 91001.8065095413. The cubic root of 8281328788 is about 2023.1744997769.

The spelling of 8281328788 in words is "eight billion, two hundred eighty-one million, three hundred twenty-eight thousand, seven hundred eighty-eight".