1288536 has 32 divisors (see below), whose sum is σ = 3285360. Its totient is φ = 420992.

The previous prime is 1288531. The next prime is 1288541. The reversal of 1288536 is 6358821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1288531) and next prime (1288541).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1288497 and 1288506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288531) 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, 766 + ... + 1778.

2^1288536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642680).

1288536 is an abundant number, since it is smaller than the sum of its proper divisors (1996824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1288536 is a wasteful number, since it uses less digits than its factorization.

1288536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1288536 is about 1135.1369961375. The cubic root of 1288536 is about 108.8175270927.

It can be divided in two parts, 12885 and 36, that added together give a palindrome (12921).

The spelling of 1288536 in words is "one million, two hundred eighty-eight thousand, five hundred thirty-six".