1213528 has 16 divisors (see below), whose sum is σ = 2409480. Its totient is φ = 571008.

The previous prime is 1213517. The next prime is 1213529. The reversal of 1213528 is 8253121.

It is a junction number, because it is equal to n+sod(n) for n = 1213499 and 1213508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326 + ... + 4597.

2^1213528 is an apocalyptic number.

It is an amenable number.

1213528 is a deficient number, since it is larger than the sum of its proper divisors (1195952).

1213528 is a wasteful number, since it uses less digits than its factorization.

1213528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8946 (or 8942 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 1213528 is about 1101.6024691330. The cubic root of 1213528 is about 106.6636891530.

Adding to 1213528 its reverse (8253121), we get a palindrome (9466649).

The spelling of 1213528 in words is "one million, two hundred thirteen thousand, five hundred twenty-eight".