1288395696 has 160 divisors (see below), whose sum is σ = 3882926080. Its totient is φ = 360557568.

The previous prime is 1288395679. The next prime is 1288395697. The reversal of 1288395696 is 6965938821.

It is not an unprimeable number, because it can be changed into a prime (1288395697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4651110 + ... + 4651386.

It is an arithmetic number, because the mean of its divisors is an integer number (24268288).

Almost surely, 2^1288395696 is an apocalyptic number.

1288395696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288395696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941463040).

1288395696 is an abundant number, since it is smaller than the sum of its proper divisors (2594530384).

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

1288395696 is a wasteful number, since it uses less digits than its factorization.

1288395696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 525 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 57.

The square root of 1288395696 is about 35894.2292854994. The cubic root of 1288395696 is about 1088.1357736772.

The spelling of 1288395696 in words is "one billion, two hundred eighty-eight million, three hundred ninety-five thousand, six hundred ninety-six".