1288528 has 20 divisors (see below), whose sum is σ = 2583540. Its totient is φ = 621824.

The previous prime is 1288519. The next prime is 1288531. The reversal of 1288528 is 8258821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 868624 = 648^2 + 932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1288493 and 1288502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925 + ... + 1852.

It is an arithmetic number, because the mean of its divisors is an integer number (129177).

2^1288528 is an apocalyptic number.

It is an amenable number.

1288528 is an abundant number, since it is smaller than the sum of its proper divisors (1295012).

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

1288528 is a wasteful number, since it uses less digits than its factorization.

1288528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2808 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 1288528 is about 1135.1334723283. The cubic root of 1288528 is about 108.8173018909.

The spelling of 1288528 in words is "one million, two hundred eighty-eight thousand, five hundred twenty-eight".