12798457 has 24 divisors (see below), whose sum is σ = 16005600. Its totient is φ = 10172736.

The previous prime is 12798449. The next prime is 12798463. The reversal of 12798457 is 75489721.

It is not a de Polignac number, because 12798457 - 2³ = 12798449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12798427) 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 23 ways as a sum of consecutive naturals, for example, 54813 + ... + 55045.

It is an arithmetic number, because the mean of its divisors is an integer number (666900).

Almost surely, 2^12798457 is an apocalyptic number.

It is an amenable number.

12798457 is a deficient number, since it is larger than the sum of its proper divisors (3207143).

12798457 is a wasteful number, since it uses less digits than its factorization.

12798457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 318 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 12798457 is about 3577.4931166950. The cubic root of 12798457 is about 233.9120191806.

The spelling of 12798457 in words is "twelve million, seven hundred ninety-eight thousand, four hundred fifty-seven".