1287448 has 16 divisors (see below), whose sum is σ = 2519280. Its totient is φ = 615648.

The previous prime is 1287431. The next prime is 1287457. The reversal of 1287448 is 8447821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315 + ... + 3682.

It is an arithmetic number, because the mean of its divisors is an integer number (157455).

2^1287448 is an apocalyptic number.

1287448 is the 607-th centered heptagonal number.

It is an amenable number.

1287448 is a deficient number, since it is larger than the sum of its proper divisors (1231832).

1287448 is a wasteful number, since it uses less digits than its factorization.

1287448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026 (or 7022 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 1287448 is about 1134.6576576219. The cubic root of 1287448 is about 108.7868910821.

The spelling of 1287448 in words is "one million, two hundred eighty-seven thousand, four hundred forty-eight".