206641430 has 32 divisors (see below), whose sum is σ = 389064384. Its totient is φ = 78871936.

The previous prime is 206641417. The next prime is 206641439. The reversal of 206641430 is 34146602.

It is a self number, because there is not a number n which added to its sum of digits gives 206641430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206641439) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 127304 + ... + 128916.

It is an arithmetic number, because the mean of its divisors is an integer number (12158262).

Almost surely, 2^206641430 is an apocalyptic number.

206641430 is a deficient number, since it is larger than the sum of its proper divisors (182422954).

206641430 is a wasteful number, since it uses less digits than its factorization.

206641430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 206641430 is about 14375.0279999727. The cubic root of 206641430 is about 591.2064082631.

The spelling of 206641430 in words is "two hundred six million, six hundred forty-one thousand, four hundred thirty".