1287008128 has 96 divisors (see below), whose sum is σ = 3003861240. Its totient is φ = 547642368.

The previous prime is 1287008117. The next prime is 1287008131. The reversal of 1287008128 is 8218007821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 984051 + ... + 985357.

Almost surely, 2^1287008128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1287008128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501930620).

1287008128 is an abundant number, since it is smaller than the sum of its proper divisors (1716853112).

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

1287008128 is a wasteful number, since it uses less digits than its factorization.

1287008128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 1287008128 is about 35874.8955120430. The cubic root of 1287008128 is about 1087.7450022355.

The spelling of 1287008128 in words is "one billion, two hundred eighty-seven million, eight thousand, one hundred twenty-eight".