206240912 has 20 divisors (see below), whose sum is σ = 401906940. Its totient is φ = 102523008.

The previous prime is 206240911. The next prime is 206240921. The reversal of 206240912 is 219042602.

It can be written as a sum of positive squares in 2 ways, for example, as 116294656 + 89946256 = 10784^2 + 9484^2 .

It is not an unprimeable number, because it can be changed into a prime (206240911) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 34487 + ... + 40022.

It is an arithmetic number, because the mean of its divisors is an integer number (20095347).

Almost surely, 2^206240912 is an apocalyptic number.

It is an amenable number.

206240912 is a deficient number, since it is larger than the sum of its proper divisors (195666028).

206240912 is a wasteful number, since it uses less digits than its factorization.

206240912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74690 (or 74684 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 206240912 is about 14361.0902093121. The cubic root of 206240912 is about 590.8241971440.

The spelling of 206240912 in words is "two hundred six million, two hundred forty thousand, nine hundred twelve".