12704457 has 8 divisors (see below), whose sum is σ = 17935776. Its totient is φ = 7971392.

The previous prime is 12704453. The next prime is 12704467. The reversal of 12704457 is 75440721.

12704457 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12704457 - 2² = 12704453 is a prime.

It is a super-2 number, since 2×12704457² = 322806455329698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12704453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124503 + ... + 124604.

It is an arithmetic number, because the mean of its divisors is an integer number (2241972).

Almost surely, 2^12704457 is an apocalyptic number.

12704457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12704457 is a deficient number, since it is larger than the sum of its proper divisors (5231319).

12704457 is a wasteful number, since it uses less digits than its factorization.

12704457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249127.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 12704457 is about 3564.3312135659. The cubic root of 12704457 is about 233.3379452603.

The spelling of 12704457 in words is "twelve million, seven hundred four thousand, four hundred fifty-seven".