206272730 has 32 divisors (see below), whose sum is σ = 394306704. Its totient is φ = 77423616.

The previous prime is 206272711. The next prime is 206272733. The reversal of 206272730 is 37272602.

It can be written as a sum of positive squares in 8 ways, for example, as 184715281 + 21557449 = 13591^2 + 4643^2 .

It is a junction number, because it is equal to n+sod(n) for n = 206272693 and 206272702.

It is not an unprimeable number, because it can be changed into a prime (206272733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61784 + ... + 65036.

Almost surely, 2^206272730 is an apocalyptic number.

206272730 is a deficient number, since it is larger than the sum of its proper divisors (188033974).

206272730 is a wasteful number, since it uses less digits than its factorization.

206272730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 206272730 is about 14362.1979515672. The cubic root of 206272730 is about 590.8545788910.

The spelling of 206272730 in words is "two hundred six million, two hundred seventy-two thousand, seven hundred thirty".