1287833 has 4 divisors (see below), whose sum is σ = 1329408. Its totient is φ = 1246260.

The previous prime is 1287829. The next prime is 1287841. The reversal of 1287833 is 3387821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1287833 - 2² = 1287829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1287833.

It is not an unprimeable number, because it can be changed into a prime (1287883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20741 + ... + 20802.

It is an arithmetic number, because the mean of its divisors is an integer number (332352).

2^1287833 is an apocalyptic number.

It is an amenable number.

1287833 is a deficient number, since it is larger than the sum of its proper divisors (41575).

1287833 is an equidigital number, since it uses as much as digits as its factorization.

1287833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41574.

The product of its digits is 8064, while the sum is 32.

The square root of 1287833 is about 1134.8272996364. The cubic root of 1287833 is about 108.7977339223.

The spelling of 1287833 in words is "one million, two hundred eighty-seven thousand, eight hundred thirty-three".