12603856 has 20 divisors (see below), whose sum is σ = 25208704. Its totient is φ = 6098400.

The previous prime is 12603853. The next prime is 12603869. The reversal of 12603856 is 65830621.

12603856 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12603853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12210 + ... + 13201.

Almost surely, 2^12603856 is an apocalyptic number.

12603856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12603856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12603856 is a wasteful number, since it uses less digits than its factorization.

12603856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25450 (or 25444 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12603856 is about 3550.1909807784. The cubic root of 12603856 is about 232.7204122475.

The spelling of 12603856 in words is "twelve million, six hundred three thousand, eight hundred fifty-six".