206059530 has 64 divisors (see below), whose sum is σ = 521054208. Its totient is φ = 52050240.

The previous prime is 206059519. The next prime is 206059531. The reversal of 206059530 is 35950602.

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

It is not an unprimeable number, because it can be changed into a prime (206059531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72435 + ... + 75225.

It is an arithmetic number, because the mean of its divisors is an integer number (8141472).

Almost surely, 2^206059530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206059530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260527104).

206059530 is an abundant number, since it is smaller than the sum of its proper divisors (314994678).

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

206059530 is a wasteful number, since it uses less digits than its factorization.

206059530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 206059530 is about 14354.7737704222. The cubic root of 206059530 is about 590.6509429550.

It can be divided in two parts, 20605 and 9530, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 206059530 in words is "two hundred six million, fifty-nine thousand, five hundred thirty".