1288436 has 6 divisors (see below), whose sum is σ = 2254770. Its totient is φ = 644216.

The previous prime is 1288429. The next prime is 1288439. The reversal of 1288436 is 6348821.

It can be written as a sum of positive squares in only one way, i.e., 1123600 + 164836 = 1060^2 + 406^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 161051 + ... + 161058.

It is an arithmetic number, because the mean of its divisors is an integer number (375795).

2^1288436 is an apocalyptic number.

It is an amenable number.

1288436 is a deficient number, since it is larger than the sum of its proper divisors (966334).

1288436 is a wasteful number, since it uses less digits than its factorization.

1288436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322113 (or 322111 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1288436 is about 1135.0929477360. The cubic root of 1288436 is about 108.8147120028.

The spelling of 1288436 in words is "one million, two hundred eighty-eight thousand, four hundred thirty-six".