206371730 has 32 divisors (see below), whose sum is σ = 396403200. Its totient is φ = 77127552.

The previous prime is 206371729. The next prime is 206371733. The reversal of 206371730 is 37173602.

It is a junction number, because it is equal to n+sod(n) for n = 206371693 and 206371702.

It is not an unprimeable number, because it can be changed into a prime (206371733) 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, 6431 + ... + 21309.

It is an arithmetic number, because the mean of its divisors is an integer number (12387600).

Almost surely, 2^206371730 is an apocalyptic number.

206371730 is a deficient number, since it is larger than the sum of its proper divisors (190031470).

206371730 is a wasteful number, since it uses less digits than its factorization.

206371730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14978.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 206371730 is about 14365.6440858042. The cubic root of 206371730 is about 590.9490900878.

The spelling of 206371730 in words is "two hundred six million, three hundred seventy-one thousand, seven hundred thirty".