12828545 has 4 divisors (see below), whose sum is σ = 15394260. Its totient is φ = 10262832.

The previous prime is 12828539. The next prime is 12828559. The reversal of 12828545 is 54582821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8300161 + 4528384 = 2881^2 + 2128^2 .

It is a cyclic number.

It is not a de Polignac number, because 12828545 - 2⁶ = 12828481 is a prime.

It is a super-3 number, since 3×12828545³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282850 + ... + 1282859.

It is an arithmetic number, because the mean of its divisors is an integer number (3848565).

Almost surely, 2^12828545 is an apocalyptic number.

It is an amenable number.

12828545 is a deficient number, since it is larger than the sum of its proper divisors (2565715).

12828545 is an equidigital number, since it uses as much as digits as its factorization.

12828545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565714.

The product of its digits is 25600, while the sum is 35.

The square root of 12828545 is about 3581.6958273980. The cubic root of 12828545 is about 234.0951776358.

The spelling of 12828545 in words is "twelve million, eight hundred twenty-eight thousand, five hundred forty-five".