12118280 has 64 divisors (see below), whose sum is σ = 29393280. Its totient is φ = 4480000.

The previous prime is 12118279. The next prime is 12118313. The reversal of 12118280 is 8281121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48155 + ... + 48405.

It is an arithmetic number, because the mean of its divisors is an integer number (459270).

Almost surely, 2^12118280 is an apocalyptic number.

12118280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12118280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14696640).

12118280 is an abundant number, since it is smaller than the sum of its proper divisors (17275000).

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

12118280 is a wasteful number, since it uses less digits than its factorization.

12118280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 12118280 is about 3481.1319997955. The cubic root of 12118280 is about 229.6925949940.

The spelling of 12118280 in words is "twelve million, one hundred eighteen thousand, two hundred eighty".