205190266 has 8 divisors (see below), whose sum is σ = 309380724. Its totient is φ = 102063360.

The previous prime is 205190257. The next prime is 205190269. The reversal of 205190266 is 662091502.

205190266 is digitally balanced in base 3, 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 2 ways, for example, as 205091041 + 99225 = 14321^2 + 315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205190266² = 84206090522301512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205190269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265405 + ... + 266176.

Almost surely, 2^205190266 is an apocalyptic number.

205190266 is a deficient number, since it is larger than the sum of its proper divisors (104190458).

205190266 is a wasteful number, since it uses less digits than its factorization.

205190266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531776.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 205190266 is about 14324.4638992180. The cubic root of 205190266 is about 589.8192168513.

The spelling of 205190266 in words is "two hundred five million, one hundred ninety thousand, two hundred sixty-six".