12361870 has 16 divisors (see below), whose sum is σ = 22969728. Its totient is φ = 4785120.

The previous prime is 12361849. The next prime is 12361871. The reversal of 12361870 is 7816321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361871) 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, 19629 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (1435608).

Almost surely, 2^12361870 is an apocalyptic number.

12361870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12361870 is a deficient number, since it is larger than the sum of its proper divisors (10607858).

12361870 is a wasteful number, since it uses less digits than its factorization.

12361870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39915.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12361870 is about 3515.9451076489. The cubic root of 12361870 is about 231.2214164817.

It can be divided in two parts, 12361 and 870, that added together give a palindrome (13231).

The spelling of 12361870 in words is "twelve million, three hundred sixty-one thousand, eight hundred seventy".