206505330 has 32 divisors (see below), whose sum is σ = 497793600. Its totient is φ = 54825792.

The previous prime is 206505311. The next prime is 206505347. The reversal of 206505330 is 33505602.

It is a self number, because there is not a number n which added to its sum of digits gives 206505330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8160 + ... + 21899.

It is an arithmetic number, because the mean of its divisors is an integer number (15556050).

Almost surely, 2^206505330 is an apocalyptic number.

206505330 is an abundant number, since it is smaller than the sum of its proper divisors (291288270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206505330 is a wasteful number, since it uses less digits than its factorization.

206505330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30298.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 206505330 is about 14370.2933164219. The cubic root of 206505330 is about 591.0765845652.

The spelling of 206505330 in words is "two hundred six million, five hundred five thousand, three hundred thirty".