12116280 has 128 divisors (see below), whose sum is σ = 40538880. Its totient is φ = 2872320.

The previous prime is 12116231. The next prime is 12116297. The reversal of 12116280 is 8261121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88372 + ... + 88508.

It is an arithmetic number, because the mean of its divisors is an integer number (316710).

Almost surely, 2^12116280 is an apocalyptic number.

12116280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12116280 is the 2010-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12116280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20269440).

12116280 is an abundant number, since it is smaller than the sum of its proper divisors (28422600).

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

12116280 is a wasteful number, since it uses less digits than its factorization.

12116280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12116280 is about 3480.8447250632. The cubic root of 12116280 is about 229.6799581493.

The spelling of 12116280 in words is "twelve million, one hundred sixteen thousand, two hundred eighty".