206366240 has 24 divisors (see below), whose sum is σ = 487540620. Its totient is φ = 82546432.

The previous prime is 206366197. The next prime is 206366261. The reversal of 206366240 is 42663602.

It can be written as a sum of positive squares in 2 ways, for example, as 187251856 + 19114384 = 13684^2 + 4372^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644735 + ... + 645054.

Almost surely, 2^206366240 is an apocalyptic number.

206366240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206366240 is an abundant number, since it is smaller than the sum of its proper divisors (281174380).

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

206366240 is a wasteful number, since it uses less digits than its factorization.

206366240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289804 (or 1289796 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 206366240 is about 14365.4530036473. The cubic root of 206366240 is about 590.9438498040.

The spelling of 206366240 in words is "two hundred six million, three hundred sixty-six thousand, two hundred forty".