1288433 has 4 divisors (see below), whose sum is σ = 1291428. Its totient is φ = 1285440.

The previous prime is 1288429. The next prime is 1288439. The reversal of 1288433 is 3348821.

It is a happy number.

1288433 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3348821 = 7 ⋅478403.

It can be written as a sum of positive squares in 2 ways, for example, as 667489 + 620944 = 817^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288433 - 2² = 1288429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1288396 and 1288405.

It is not an unprimeable number, because it can be changed into a prime (1288439) 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 3 ways as a sum of consecutive naturals, for example, 716 + ... + 1757.

It is an arithmetic number, because the mean of its divisors is an integer number (322857).

2^1288433 is an apocalyptic number.

It is an amenable number.

1288433 is a deficient number, since it is larger than the sum of its proper divisors (2995).

1288433 is an equidigital number, since it uses as much as digits as its factorization.

1288433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994.

The product of its digits is 4608, while the sum is 29.

The square root of 1288433 is about 1135.0916262575. The cubic root of 1288433 is about 108.8146275478.

The spelling of 1288433 in words is "one million, two hundred eighty-eight thousand, four hundred thirty-three".