1288982 has 4 divisors (see below), whose sum is σ = 1933476. Its totient is φ = 644490.

The previous prime is 1288981. The next prime is 1288993. The reversal of 1288982 is 2898821.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1288982² = 3322949192648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288981) 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 as a sum of consecutive naturals, namely, 322244 + ... + 322247.

It is an arithmetic number, because the mean of its divisors is an integer number (483369).

2^1288982 is an apocalyptic number.

1288982 is a deficient number, since it is larger than the sum of its proper divisors (644494).

1288982 is an equidigital number, since it uses as much as digits as its factorization.

1288982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644493.

The product of its digits is 18432, while the sum is 38.

The square root of 1288982 is about 1135.3334311998. Note that the first 3 decimals coincide. The cubic root of 1288982 is about 108.8300806208.

The spelling of 1288982 in words is "one million, two hundred eighty-eight thousand, nine hundred eighty-two".