206286730 has 16 divisors (see below), whose sum is σ = 399879144. Its totient is φ = 76167360.

The previous prime is 206286727. The next prime is 206286733. The reversal of 206286730 is 37682602.

It is an interprime number because it is at equal distance from previous prime (206286727) and next prime (206286733).

It can be written as a sum of positive squares in 4 ways, for example, as 54922921 + 151363809 = 7411^2 + 12303^2 .

It is not an unprimeable number, because it can be changed into a prime (206286733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793281 + ... + 793540.

Almost surely, 2^206286730 is an apocalyptic number.

206286730 is a deficient number, since it is larger than the sum of its proper divisors (193592414).

206286730 is a wasteful number, since it uses less digits than its factorization.

206286730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586841.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 206286730 is about 14362.6853338782. The cubic root of 206286730 is about 590.8679459463.

The spelling of 206286730 in words is "two hundred six million, two hundred eighty-six thousand, seven hundred thirty".