12428457 has 8 divisors (see below), whose sum is σ = 16589280. Its totient is φ = 8276640.

The previous prime is 12428431. The next prime is 12428467. The reversal of 12428457 is 75482421.

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

It is not a de Polignac number, because 12428457 - 2⁷ = 12428329 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12428467) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2269 + ... + 5477.

It is an arithmetic number, because the mean of its divisors is an integer number (2073660).

Almost surely, 2^12428457 is an apocalyptic number.

It is an amenable number.

12428457 is a deficient number, since it is larger than the sum of its proper divisors (4160823).

12428457 is a wasteful number, since it uses less digits than its factorization.

12428457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503.

The product of its digits is 17920, while the sum is 33.

The square root of 12428457 is about 3525.4016792417. The cubic root of 12428457 is about 231.6358300197.

The spelling of 12428457 in words is "twelve million, four hundred twenty-eight thousand, four hundred fifty-seven".