1288630116 has 72 divisors (see below), whose sum is σ = 3310280064. Its totient is φ = 422622720.

The previous prime is 1288630111. The next prime is 1288630127. The reversal of 1288630116 is 6110368821.

1288630116 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 630 + 1 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1288630111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618196 + ... + 620276.

It is an arithmetic number, because the mean of its divisors is an integer number (45976112).

Almost surely, 2^1288630116 is an apocalyptic number.

It is an amenable number.

1288630116 is an abundant number, since it is smaller than the sum of its proper divisors (2021649948).

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

1288630116 is a wasteful number, since it uses less digits than its factorization.

1288630116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1288630116 is about 35897.4945643843. The cubic root of 1288630116 is about 1088.2017640972.

Adding to 1288630116 its reverse (6110368821), we get a palindrome (7398998937).

The spelling of 1288630116 in words is "one billion, two hundred eighty-eight million, six hundred thirty thousand, one hundred sixteen".