12271860 has 72 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 3227328.

The previous prime is 12271859. The next prime is 12271867. The reversal of 12271860 is 6817221.

12271860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13789 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^12271860 is an apocalyptic number.

12271860 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 12271860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18869760).

12271860 is an abundant number, since it is smaller than the sum of its proper divisors (25467660).

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

12271860 is a wasteful number, since it uses less digits than its factorization.

12271860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 12271860 is about 3503.1214652079. The cubic root of 12271860 is about 230.6588543951.

It can be divided in two parts, 12271 and 860, that added together give a palindrome (13131).

The spelling of 12271860 in words is "twelve million, two hundred seventy-one thousand, eight hundred sixty".