1328306285 has 16 divisors (see below), whose sum is σ = 1650551040. Its totient is φ = 1024994880.

The previous prime is 1328306279. The next prime is 1328306297. The reversal of 1328306285 is 5826038231.

It is not a de Polignac number, because 1328306285 - 2¹⁴ = 1328289901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165884 + ... + 173706.

It is an arithmetic number, because the mean of its divisors is an integer number (103159440).

Almost surely, 2^1328306285 is an apocalyptic number.

It is an amenable number.

1328306285 is a deficient number, since it is larger than the sum of its proper divisors (322244755).

1328306285 is a wasteful number, since it uses less digits than its factorization.

1328306285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1328306285 is about 36445.9364675954. The cubic root of 1328306285 is about 1099.2574285809.

The spelling of 1328306285 in words is "one billion, three hundred twenty-eight million, three hundred six thousand, two hundred eighty-five".