206143860 has 96 divisors (see below), whose sum is σ = 626798592. Its totient is φ = 50319360.

The previous prime is 206143837. The next prime is 206143933. The reversal of 206143860 is 68341602.

206143860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×206143860³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 98020 + ... + 100100.

It is an arithmetic number, because the mean of its divisors is an integer number (6529152).

Almost surely, 2^206143860 is an apocalyptic number.

206143860 is a gapful number since it is divisible by the number (20) 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 206143860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313399296).

206143860 is an abundant number, since it is smaller than the sum of its proper divisors (420654732).

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

206143860 is a wasteful number, since it uses less digits than its factorization.

206143860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 206143860 is about 14357.7108203223. The cubic root of 206143860 is about 590.7315067297.

The spelling of 206143860 in words is "two hundred six million, one hundred forty-three thousand, eight hundred sixty".