1287584116 has 48 divisors (see below), whose sum is σ = 2776219264. Its totient is φ = 508830336.

The previous prime is 1287584047. The next prime is 1287584117. The reversal of 1287584116 is 6114857821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287584117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626146 + ... + 628198.

Almost surely, 2^1287584116 is an apocalyptic number.

It is an amenable number.

1287584116 is an abundant number, since it is smaller than the sum of its proper divisors (1488635148).

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

1287584116 is a wasteful number, since it uses less digits than its factorization.

1287584116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800 (or 3798 counting only the distinct ones).

The product of its digits is 107520, while the sum is 43.

The square root of 1287584116 is about 35882.9223447589. The cubic root of 1287584116 is about 1087.9072479412.

The spelling of 1287584116 in words is "one billion, two hundred eighty-seven million, five hundred eighty-four thousand, one hundred sixteen".