12091080 has 64 divisors (see below), whose sum is σ = 38413440. Its totient is φ = 3034112.

The previous prime is 12091073. The next prime is 12091081. The reversal of 12091080 is 8019021.

It is not an unprimeable number, because it can be changed into a prime (12091081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

Almost surely, 2^12091080 is an apocalyptic number.

12091080 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 12091080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19206720).

12091080 is an abundant number, since it is smaller than the sum of its proper divisors (26322360).

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

12091080 is a wasteful number, since it uses less digits than its factorization.

12091080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958 (or 5954 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 12091080 is about 3477.2230299479. The cubic root of 12091080 is about 229.5206146253.

The spelling of 12091080 in words is "twelve million, ninety-one thousand, eighty".