12428645 has 8 divisors (see below), whose sum is σ = 15167520. Its totient is φ = 9774160.

The previous prime is 12428639. The next prime is 12428657. The reversal of 12428645 is 54682421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12428645 - 2⁴ = 12428629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20771 + ... + 21360.

It is an arithmetic number, because the mean of its divisors is an integer number (1895940).

Almost surely, 2^12428645 is an apocalyptic number.

It is an amenable number.

12428645 is a deficient number, since it is larger than the sum of its proper divisors (2738875).

12428645 is an equidigital number, since it uses as much as digits as its factorization.

12428645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42195.

The product of its digits is 15360, while the sum is 32.

The square root of 12428645 is about 3525.4283427691. The cubic root of 12428645 is about 231.6369979661.

The spelling of 12428645 in words is "twelve million, four hundred twenty-eight thousand, six hundred forty-five".