12278903 has 16 divisors (see below), whose sum is σ = 15375360. Its totient is φ = 9546336.

The previous prime is 12278887. The next prime is 12278909. The reversal of 12278903 is 30987221.

It is a cyclic number.

It is not a de Polignac number, because 12278903 - 2⁴ = 12278887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12278903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4226 + ... + 6512.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^12278903 is an apocalyptic number.

12278903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12278903 is a deficient number, since it is larger than the sum of its proper divisors (3096457).

12278903 is a wasteful number, since it uses less digits than its factorization.

12278903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12278903 is about 3504.1265673488. The cubic root of 12278903 is about 230.7029721200.

The spelling of 12278903 in words is "twelve million, two hundred seventy-eight thousand, nine hundred three".