1287534360 has 64 divisors (see below), whose sum is σ = 4414406400. Its totient is φ = 294293376.

The previous prime is 1287534359. The next prime is 1287534371. The reversal of 1287534360 is 634357821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765550 + ... + 767229.

It is an arithmetic number, because the mean of its divisors is an integer number (68975100).

Almost surely, 2^1287534360 is an apocalyptic number.

1287534360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287534360 is an abundant number, since it is smaller than the sum of its proper divisors (3126872040).

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

1287534360 is a wasteful number, since it uses less digits than its factorization.

1287534360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532800 (or 1532796 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 1287534360 is about 35882.2290277513. The cubic root of 1287534360 is about 1087.8932344593.

The spelling of 1287534360 in words is "one billion, two hundred eighty-seven million, five hundred thirty-four thousand, three hundred sixty".