1287048 has 64 divisors (see below), whose sum is σ = 3778560. Its totient is φ = 357696.

The previous prime is 1287047. The next prime is 1287059. The reversal of 1287048 is 8407821.

It is not an unprimeable number, because it can be changed into a prime (1287047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7815 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (59040).

2^1287048 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 1287048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889280).

1287048 is an abundant number, since it is smaller than the sum of its proper divisors (2491512).

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

1287048 is a wasteful number, since it uses less digits than its factorization.

1287048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1287048 is about 1134.4813793095. The cubic root of 1287048 is about 108.7756235037.

The spelling of 1287048 in words is "one million, two hundred eighty-seven thousand, forty-eight".