206434406 has 8 divisors (see below), whose sum is σ = 309737520. Its totient is φ = 103188568.

The previous prime is 206434391. The next prime is 206434409. The reversal of 206434406 is 604434602.

It is a happy number.

206434406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206434409) 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, 3746 + ... + 20661.

It is an arithmetic number, because the mean of its divisors is an integer number (38717190).

Almost surely, 2^206434406 is an apocalyptic number.

206434406 is a deficient number, since it is larger than the sum of its proper divisors (103303114).

206434406 is a wasteful number, since it uses less digits than its factorization.

206434406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28638.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 206434406 is about 14367.8253747740. The cubic root of 206434406 is about 591.0089086431.

The spelling of 206434406 in words is "two hundred six million, four hundred thirty-four thousand, four hundred six".