1288207 has 4 divisors (see below), whose sum is σ = 1344240. Its totient is φ = 1232176.

The previous prime is 1288201. The next prime is 1288213. The reversal of 1288207 is 7028821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7028821 = 1531 ⋅4591.

It is an interprime number because it is at equal distance from previous prime (1288201) and next prime (1288213).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288207 is a prime.

It is a Duffinian number.

1288207 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 27982 + ... + 28027.

It is an arithmetic number, because the mean of its divisors is an integer number (336060).

2^1288207 is an apocalyptic number.

1288207 is a deficient number, since it is larger than the sum of its proper divisors (56033).

1288207 is an equidigital number, since it uses as much as digits as its factorization.

1288207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56032.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1288207 is about 1134.9920704569. The cubic root of 1288207 is about 108.8082648980.

The spelling of 1288207 in words is "one million, two hundred eighty-eight thousand, two hundred seven".