1283866 has 8 divisors (see below), whose sum is σ = 1932084. Its totient is φ = 639840.

The previous prime is 1283839. The next prime is 1283873. The reversal of 1283866 is 6683821.

It can be written as a sum of positive squares in 2 ways, for example, as 1256641 + 27225 = 1121^2 + 165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 115 + ... + 1606.

2^1283866 is an apocalyptic number.

1283866 is a deficient number, since it is larger than the sum of its proper divisors (648218).

1283866 is a wasteful number, since it uses less digits than its factorization.

1283866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its digits is 13824, while the sum is 34.

The square root of 1283866 is about 1133.0781085168. The cubic root of 1283866 is about 108.6859066555.

The spelling of 1283866 in words is "one million, two hundred eighty-three thousand, eight hundred sixty-six".