1287268360 has 64 divisors (see below), whose sum is σ = 3364427520. Its totient is φ = 434108160.

The previous prime is 1287268337. The next prime is 1287268427. The reversal of 1287268360 is 638627821.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20604 + ... + 54763.

It is an arithmetic number, because the mean of its divisors is an integer number (52569180).

Almost surely, 2^1287268360 is an apocalyptic number.

1287268360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287268360 is an abundant number, since it is smaller than the sum of its proper divisors (2077159160).

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

1287268360 is a wasteful number, since it uses less digits than its factorization.

1287268360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75446 (or 75442 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 1287268360 is about 35878.5222661135. The cubic root of 1287268360 is about 1087.8183110139.

The spelling of 1287268360 in words is "one billion, two hundred eighty-seven million, two hundred sixty-eight thousand, three hundred sixty".