1287303260 has 24 divisors (see below), whose sum is σ = 2776401600. Its totient is φ = 501004224.

The previous prime is 1287303239. The next prime is 1287303271. The reversal of 1287303260 is 623037821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869060 + ... + 870539.

It is an arithmetic number, because the mean of its divisors is an integer number (115683400).

Almost surely, 2^1287303260 is an apocalyptic number.

1287303260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287303260 is an abundant number, since it is smaller than the sum of its proper divisors (1489098340).

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

1287303260 is a wasteful number, since it uses less digits than its factorization.

1287303260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739645 (or 1739643 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1287303260 is about 35879.0086262149. The cubic root of 1287303260 is about 1087.8281417835.

The spelling of 1287303260 in words is "one billion, two hundred eighty-seven million, three hundred three thousand, two hundred sixty".