206532890 has 16 divisors (see below), whose sum is σ = 381807432. Its totient is φ = 80380224.

The previous prime is 206532877. The next prime is 206532901. The reversal of 206532890 is 98235602.

206532890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 204404209 + 2128681 = 14297^2 + 1459^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206532890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278729 + ... + 279468.

Almost surely, 2^206532890 is an apocalyptic number.

206532890 is a deficient number, since it is larger than the sum of its proper divisors (175274542).

206532890 is a wasteful number, since it uses less digits than its factorization.

206532890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558241.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 206532890 is about 14371.2522070973. The cubic root of 206532890 is about 591.1028782304.

The spelling of 206532890 in words is "two hundred six million, five hundred thirty-two thousand, eight hundred ninety".