1288205 has 8 divisors (see below), whose sum is σ = 1595904. Its totient is φ = 997200.

The previous prime is 1288201. The next prime is 1288213. The reversal of 1288205 is 5028821.

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

It is not a de Polignac number, because 1288205 - 2² = 1288201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001 + ... + 4310.

It is an arithmetic number, because the mean of its divisors is an integer number (199488).

2^1288205 is an apocalyptic number.

It is an amenable number.

1288205 is a deficient number, since it is larger than the sum of its proper divisors (307699).

1288205 is an equidigital number, since it uses as much as digits as its factorization.

1288205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1288205 is about 1134.9911893931. The cubic root of 1288205 is about 108.8082085881.

The spelling of 1288205 in words is "one million, two hundred eighty-eight thousand, two hundred five".