143864 has 24 divisors (see below), whose sum is σ = 314640. Its totient is φ = 61488.

The previous prime is 143833. The next prime is 143873. The reversal of 143864 is 468341.

143864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143864.

It is an unprimeable number.

143864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209 + ... + 575.

It is an arithmetic number, because the mean of its divisors is an integer number (13110).

2¹⁴³⁸⁶⁴ is an apocalyptic number.

143864 is a gapful number since it is divisible by the number (14) 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 143864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157320).

143864 is an abundant number, since it is smaller than the sum of its proper divisors (170776).

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

143864 is a wasteful number, since it uses less digits than its factorization.

143864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 376 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 143864 is about 379.2940811560. The cubic root of 143864 is about 52.3983217224.

The spelling of 143864 in words is "one hundred forty-three thousand, eight hundred sixty-four".