1287875612 has 24 divisors (see below), whose sum is σ = 2264976000. Its totient is φ = 640748736.

The previous prime is 1287875609. The next prime is 1287875629. The reversal of 1287875612 is 2165787821.

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, 1204214 + ... + 1205282.

It is an arithmetic number, because the mean of its divisors is an integer number (94374000).

Almost surely, 2^1287875612 is an apocalyptic number.

It is an amenable number.

1287875612 is a deficient number, since it is larger than the sum of its proper divisors (977100388).

1287875612 is a wasteful number, since it uses less digits than its factorization.

1287875612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2283 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 1287875612 is about 35886.9838799529. The cubic root of 1287875612 is about 1087.9893388066.

The spelling of 1287875612 in words is "one billion, two hundred eighty-seven million, eight hundred seventy-five thousand, six hundred twelve".