206117450 has 144 divisors (see below), whose sum is σ = 500301312. Its totient is φ = 61776000.

The previous prime is 206117449. The next prime is 206117489. The reversal of 206117450 is 54711602.

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 71 ways as a sum of consecutive naturals, for example, 1312772 + ... + 1312928.

Almost surely, 2^206117450 is an apocalyptic number.

206117450 is an abundant number, since it is smaller than the sum of its proper divisors (294183862).

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

206117450 is a wasteful number, since it uses less digits than its factorization.

206117450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 206117450 is about 14356.7910760030. The cubic root of 206117450 is about 590.7062785786.

The spelling of 206117450 in words is "two hundred six million, one hundred seventeen thousand, four hundred fifty".