12081740 has 24 divisors (see below), whose sum is σ = 27678672. Its totient is φ = 4393280.

The previous prime is 12081733. The next prime is 12081743. The reversal of 12081740 is 4718021.

It is not an unprimeable number, because it can be changed into a prime (12081743) 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 7 ways as a sum of consecutive naturals, for example, 27239 + ... + 27678.

It is an arithmetic number, because the mean of its divisors is an integer number (1153278).

Almost surely, 2^12081740 is an apocalyptic number.

12081740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12081740 is an abundant number, since it is smaller than the sum of its proper divisors (15596932).

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

12081740 is a wasteful number, since it uses less digits than its factorization.

12081740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54937 (or 54935 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12081740 is about 3475.8797447553. The cubic root of 12081740 is about 229.4615001165.

Adding to 12081740 its reverse (4718021), we get a palindrome (16799761).

It can be divided in two parts, 12081 and 740, that added together give a palindrome (12821).

The spelling of 12081740 in words is "twelve million, eighty-one thousand, seven hundred forty".