1288306068 has 24 divisors (see below), whose sum is σ = 3435483072. Its totient is φ = 368087424.

The previous prime is 1288306067. The next prime is 1288306079. The reversal of 1288306068 is 8606038821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288306067) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7668405 + ... + 7668572.

It is an arithmetic number, because the mean of its divisors is an integer number (143145128).

Almost surely, 2^1288306068 is an apocalyptic number.

It is an amenable number.

1288306068 is an abundant number, since it is smaller than the sum of its proper divisors (2147177004).

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

1288306068 is a wasteful number, since it uses less digits than its factorization.

1288306068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336991 (or 15336989 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1288306068 is about 35892.9807622605. The cubic root of 1288306068 is about 1088.1105408250.

The spelling of 1288306068 in words is "one billion, two hundred eighty-eight million, three hundred six thousand, sixty-eight".