143688168 has 160 divisors (see below), whose sum is σ = 446097960. Its totient is φ = 42923520.

The previous prime is 143688161. The next prime is 143688173. The reversal of 143688168 is 861886341.

It is a happy number.

It is a Cunningham number, because it is equal to 11987²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 116251524 + 27436644 = 10782^2 + 5238^2 .

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 (143688161) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 311458 + ... + 311918.

Almost surely, 2^143688168 is an apocalyptic number.

143688168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143688168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223048980).

143688168 is an abundant number, since it is smaller than the sum of its proper divisors (302409792).

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

143688168 is a wasteful number, since it uses less digits than its factorization.

143688168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 516 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 143688168 is about 11986.9999582881. Note that the first 4 decimals coincide. The cubic root of 143688168 is about 523.7696577095.

The spelling of 143688168 in words is "one hundred forty-three million, six hundred eighty-eight thousand, one hundred sixty-eight".