12857403 has 8 divisors (see below), whose sum is σ = 18461968. Its totient is φ = 7912224.

The previous prime is 12857381. The next prime is 12857407. The reversal of 12857403 is 30475821.

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

It is not a de Polignac number, because 12857403 - 2⁸ = 12857147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12857407) 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, 164800 + ... + 164877.

It is an arithmetic number, because the mean of its divisors is an integer number (2307746).

Almost surely, 2^12857403 is an apocalyptic number.

12857403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12857403 is a deficient number, since it is larger than the sum of its proper divisors (5604565).

12857403 is a wasteful number, since it uses less digits than its factorization.

12857403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329693.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 12857403 is about 3585.7221030080. The cubic root of 12857403 is about 234.2705796893.

The spelling of 12857403 in words is "twelve million, eight hundred fifty-seven thousand, four hundred three".