206000730 has 96 divisors (see below), whose sum is σ = 610790544. Its totient is φ = 47720448.

The previous prime is 206000723. The next prime is 206000741. The reversal of 206000730 is 37000602.

It can be written as a sum of positive squares in 8 ways, for example, as 78694641 + 127306089 = 8871^2 + 11283^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14712 + ... + 25068.

Almost surely, 2^206000730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206000730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305395272).

206000730 is an abundant number, since it is smaller than the sum of its proper divisors (404789814).

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

206000730 is a wasteful number, since it uses less digits than its factorization.

206000730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10400 (or 10397 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 206000730 is about 14352.7255251398. The cubic root of 206000730 is about 590.5947559889.

The spelling of 206000730 in words is "two hundred six million, seven hundred thirty", and thus it is an aban number.