1288630314 has 12 divisors (see below), whose sum is σ = 2792032386. Its totient is φ = 429543432.

The previous prime is 1288630297. The next prime is 1288630319. The reversal of 1288630314 is 4130368821.

1288630314 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 630 + 3 + 14 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1239392025 + 49238289 = 35205^2 + 7017^2 .

It is not an unprimeable number, because it can be changed into a prime (1288630319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35795269 + ... + 35795304.

Almost surely, 2^1288630314 is an apocalyptic number.

1288630314 is an abundant number, since it is smaller than the sum of its proper divisors (1503402072).

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

1288630314 is a wasteful number, since it uses less digits than its factorization.

1288630314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71590581 (or 71590578 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1288630314 is about 35897.4973222368. The cubic root of 1288630314 is about 1088.2018198318.

The spelling of 1288630314 in words is "one billion, two hundred eighty-eight million, six hundred thirty thousand, three hundred fourteen".