100206 has 24 divisors (see below), whose sum is σ = 229320. Its totient is φ = 31536.

The previous prime is 100193. The next prime is 100207. The reversal of 100206 is 602001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 488.

It is an arithmetic number, because the mean of its divisors is an integer number (9555).

2¹⁰⁰²⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114660).

100206 is an abundant number, since it is smaller than the sum of its proper divisors (129114).

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

100206 is a wasteful number, since it uses less digits than its factorization.

100206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100206 is about 316.5533130454. The cubic root of 100206 is about 46.4477387189.

Adding to 100206 its reverse (602001), we get a palindrome (702207).

The spelling of 100206 in words is "one hundred thousand, two hundred six".