1288716828 has 24 divisors (see below), whose sum is σ = 3436578432. Its totient is φ = 368204784.

The previous prime is 1288716827. The next prime is 1288716833. The reversal of 1288716828 is 8286178821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288716827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7670850 + ... + 7671017.

It is an arithmetic number, because the mean of its divisors is an integer number (143190768).

Almost surely, 2^1288716828 is an apocalyptic number.

It is an amenable number.

1288716828 is an abundant number, since it is smaller than the sum of its proper divisors (2147861604).

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

1288716828 is a wasteful number, since it uses less digits than its factorization.

1288716828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15341881 (or 15341879 counting only the distinct ones).

The product of its digits is 688128, while the sum is 51.

The square root of 1288716828 is about 35898.7023163791. The cubic root of 1288716828 is about 1088.2261719377.

The spelling of 1288716828 in words is "one billion, two hundred eighty-eight million, seven hundred sixteen thousand, eight hundred twenty-eight".