1287504 has 30 divisors (see below), whose sum is σ = 3603626. Its totient is φ = 429120.

The previous prime is 1287499. The next prime is 1287511. The reversal of 1287504 is 4057821.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 121104 = 1080^2 + 348^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

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, 4327 + ... + 4614.

2^1287504 is an apocalyptic number.

It is an amenable number.

1287504 is an abundant number, since it is smaller than the sum of its proper divisors (2316122).

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

1287504 is a wasteful number, since it uses less digits than its factorization.

1287504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8955 (or 8946 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1287504 is about 1134.6823344002. The cubic root of 1287504 is about 108.7884683568.

The spelling of 1287504 in words is "one million, two hundred eighty-seven thousand, five hundred four".