206000090 has 32 divisors (see below), whose sum is σ = 400878720. Its totient is φ = 75950784.

The previous prime is 206000083. The next prime is 206000131. The reversal of 206000090 is 90000602.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7622 + ... + 21681.

It is an arithmetic number, because the mean of its divisors is an integer number (12527460).

Almost surely, 2^206000090 is an apocalyptic number.

206000090 is a deficient number, since it is larger than the sum of its proper divisors (194878630).

206000090 is a wasteful number, since it uses less digits than its factorization.

206000090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29366.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 206000090 is about 14352.7032297055. The cubic root of 206000090 is about 590.5941443713.

Adding to 206000090 its reverse (90000602), we get a palindrome (296000692).

The spelling of 206000090 in words is "two hundred six million, ninety", and thus it is an aban number.