1287032704 has 48 divisors (see below), whose sum is σ = 2649641760. Its totient is φ = 622698240.

The previous prime is 1287032657. The next prime is 1287032711. The reversal of 1287032704 is 4072307821.

It is a self number, because there is not a number n which added to its sum of digits gives 1287032704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117777 + ... + 128239.

It is an arithmetic number, because the mean of its divisors is an integer number (55200870).

Almost surely, 2^1287032704 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 1287032704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324820880).

1287032704 is an abundant number, since it is smaller than the sum of its proper divisors (1362609056).

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

1287032704 is an equidigital number, since it uses as much as digits as its factorization.

1287032704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539 (or 10496 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1287032704 is about 35875.2380340535. The cubic root of 1287032704 is about 1087.7519258517.

The spelling of 1287032704 in words is "one billion, two hundred eighty-seven million, thirty-two thousand, seven hundred four".