143888 has 30 divisors (see below), whose sum is σ = 308574. Its totient is φ = 64768.

The previous prime is 143881. The next prime is 143909. The reversal of 143888 is 888341.

143888 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 135424 + 8464 = 368^2 + 92^2 .

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143888.

It is not an unprimeable number, because it can be changed into a prime (143881) by changing a digit.

143888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6245 + ... + 6267.

2¹⁴³⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154287).

143888 is an abundant number, since it is smaller than the sum of its proper divisors (164686).

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

143888 is a wasteful number, since it uses less digits than its factorization.

143888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 42 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 143888 is about 379.3257175568. The cubic root of 143888 is about 52.4012353301.

The spelling of 143888 in words is "one hundred forty-three thousand, eight hundred eighty-eight".