12856398 has 16 divisors (see below), whose sum is σ = 26311296. Its totient is φ = 4185720.

The previous prime is 12856387. The next prime is 12856399. The reversal of 12856398 is 89365821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856399) 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, 24658 + ... + 25173.

It is an arithmetic number, because the mean of its divisors is an integer number (1644456).

Almost surely, 2^12856398 is an apocalyptic number.

12856398 is an abundant number, since it is smaller than the sum of its proper divisors (13454898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12856398 is a wasteful number, since it uses less digits than its factorization.

12856398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49879.

The product of its digits is 103680, while the sum is 42.

The square root of 12856398 is about 3585.5819611327. The cubic root of 12856398 is about 234.2644756037.

The spelling of 12856398 in words is "twelve million, eight hundred fifty-six thousand, three hundred ninety-eight".