1288073 has 6 divisors (see below), whose sum is σ = 1368606. Its totient is φ = 1212032.

The previous prime is 1288061. The next prime is 1288099. The reversal of 1288073 is 3708821.

It can be written as a sum of positive squares in 3 ways, for example, as 652864 + 635209 = 808^2 + 797^2 .

It is not a de Polignac number, because 1288073 - 2⁴ = 1288057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288003) 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 5 ways as a sum of consecutive naturals, for example, 1940 + ... + 2517.

It is an arithmetic number, because the mean of its divisors is an integer number (228101).

2^1288073 is an apocalyptic number.

It is an amenable number.

1288073 is a deficient number, since it is larger than the sum of its proper divisors (80533).

1288073 is an equidigital number, since it uses as much as digits as its factorization.

1288073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491 (or 4474 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1288073 is about 1134.9330376723. The cubic root of 1288073 is about 108.8044920020.

The spelling of 1288073 in words is "one million, two hundred eighty-eight thousand, seventy-three".