12115770 has 32 divisors (see below), whose sum is σ = 29211840. Its totient is φ = 3216000.

The previous prime is 12115769. The next prime is 12115783. The reversal of 12115770 is 7751121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12115770.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6726 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (912870).

Almost surely, 2^12115770 is an apocalyptic number.

12115770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12115770 is an abundant number, since it is smaller than the sum of its proper divisors (17096070).

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

12115770 is a wasteful number, since it uses less digits than its factorization.

12115770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 12115770 is about 3480.7714662126. The cubic root of 12115770 is about 229.6767355314.

Adding to 12115770 its reverse (7751121), we get a palindrome (19866891).

The spelling of 12115770 in words is "twelve million, one hundred fifteen thousand, seven hundred seventy".