12143688 has 32 divisors (see below), whose sum is σ = 30508800. Its totient is φ = 4027968.

The previous prime is 12143687. The next prime is 12143689. The reversal of 12143688 is 88634121.

It is an interprime number because it is at equal distance from previous prime (12143687) and next prime (12143689).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12143687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4218 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (953400).

Almost surely, 2^12143688 is an apocalyptic number.

It is an amenable number.

12143688 is an abundant number, since it is smaller than the sum of its proper divisors (18365112).

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

12143688 is a wasteful number, since it uses less digits than its factorization.

12143688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2497 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 12143688 is about 3484.7794765236. The cubic root of 12143688 is about 229.8530125741.

The spelling of 12143688 in words is "twelve million, one hundred forty-three thousand, six hundred eighty-eight".