12081380 has 12 divisors (see below), whose sum is σ = 25370940. Its totient is φ = 4832544.

The previous prime is 12081343. The next prime is 12081389. The reversal of 12081380 is 8318021.

It can be written as a sum of positive squares in 2 ways, for example, as 2483776 + 9597604 = 1576^2 + 3098^2 .

It is not an unprimeable number, because it can be changed into a prime (12081389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 302015 + ... + 302054.

It is an arithmetic number, because the mean of its divisors is an integer number (2114245).

Almost surely, 2^12081380 is an apocalyptic number.

12081380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12081380 is an abundant number, since it is smaller than the sum of its proper divisors (13289560).

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

12081380 is a wasteful number, since it uses less digits than its factorization.

12081380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604078 (or 604076 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 12081380 is about 3475.8279589186. The cubic root of 12081380 is about 229.4592210033.

The spelling of 12081380 in words is "twelve million, eighty-one thousand, three hundred eighty".