12113870 has 32 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 4482720.

The previous prime is 12113869. The next prime is 12113873. The reversal of 12113870 is 7831121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6281 + ... + 7979.

It is an arithmetic number, because the mean of its divisors is an integer number (734400).

Almost surely, 2^12113870 is an apocalyptic number.

12113870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12113870 is a deficient number, since it is larger than the sum of its proper divisors (11386930).

12113870 is a wasteful number, since it uses less digits than its factorization.

12113870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12113870 is about 3480.4985275101. The cubic root of 12113870 is about 229.6647289040.

Adding to 12113870 its reverse (7831121), we get a palindrome (19944991).

The spelling of 12113870 in words is "twelve million, one hundred thirteen thousand, eight hundred seventy".