1288873 has 2 divisors, whose sum is σ = 1288874. Its totient is φ = 1288872.

The previous prime is 1288871. The next prime is 1288877. The reversal of 1288873 is 3788821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283689 + 5184 = 1133^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288873 - 2¹ = 1288871 is a prime.

It is a super-2 number, since 2×1288873² = 3322387220258, which contains 22 as substring.

Together with 1288871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1288871) 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, 644436 + 644437.

It is an arithmetic number, because the mean of its divisors is an integer number (644437).

2^1288873 is an apocalyptic number.

It is an amenable number.

1288873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288873 is an equidigital number, since it uses as much as digits as its factorization.

1288873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 1288873 is about 1135.2854266659. The cubic root of 1288873 is about 108.8270128735.

The spelling of 1288873 in words is "one million, two hundred eighty-eight thousand, eight hundred seventy-three".