206489732 has 6 divisors (see below), whose sum is σ = 361357038. Its totient is φ = 103244864.

The previous prime is 206489719. The next prime is 206489743. The reversal of 206489732 is 237984602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 204375616 + 2114116 = 14296^2 + 1454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206489732.

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 as a sum of consecutive naturals, namely, 25811213 + ... + 25811220.

It is an arithmetic number, because the mean of its divisors is an integer number (60226173).

Almost surely, 2^206489732 is an apocalyptic number.

It is an amenable number.

206489732 is a deficient number, since it is larger than the sum of its proper divisors (154867306).

206489732 is a wasteful number, since it uses less digits than its factorization.

206489732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51622437 (or 51622435 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 206489732 is about 14369.7505893457. The cubic root of 206489732 is about 591.0617022299.

The spelling of 206489732 in words is "two hundred six million, four hundred eighty-nine thousand, seven hundred thirty-two".