1304528 has 10 divisors (see below), whose sum is σ = 2527554. Its totient is φ = 652256.

The previous prime is 1304519. The next prime is 1304531. The reversal of 1304528 is 8254031.

It can be written as a sum of positive squares in only one way, i.e., 1281424 + 23104 = 1132^2 + 152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40751 + ... + 40782.

2^1304528 is an apocalyptic number.

It is an amenable number.

1304528 is a deficient number, since it is larger than the sum of its proper divisors (1223026).

1304528 is an equidigital number, since it uses as much as digits as its factorization.

1304528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81541 (or 81535 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1304528 is about 1142.1593584084. The cubic root of 1304528 is about 109.2658549847.

Adding to 1304528 its reverse (8254031), we get a palindrome (9558559).

The spelling of 1304528 in words is "one million, three hundred four thousand, five hundred twenty-eight".