12276918 has 36 divisors (see below), whose sum is σ = 27582828. Its totient is φ = 3946320.

The previous prime is 12276893. The next prime is 12276931. The reversal of 12276918 is 81967221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14733 + ... + 15543.

Almost surely, 2^12276918 is an apocalyptic number.

12276918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12276918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13791414).

12276918 is an abundant number, since it is smaller than the sum of its proper divisors (15305910).

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

12276918 is a wasteful number, since it uses less digits than its factorization.

12276918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 845 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12276918 is about 3503.8433184148. The cubic root of 12276918 is about 230.6905396826.

The spelling of 12276918 in words is "twelve million, two hundred seventy-six thousand, nine hundred eighteen".