206322728 has 16 divisors (see below), whose sum is σ = 391517280. Its totient is φ = 101918128.

The previous prime is 206322713. The next prime is 206322757. The reversal of 206322728 is 827223602.

It is a junction number, because it is equal to n+sod(n) for n = 206322694 and 206322703.

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 3 ways as a sum of consecutive naturals, for example, 154700 + ... + 156027.

It is an arithmetic number, because the mean of its divisors is an integer number (24469830).

Almost surely, 2^206322728 is an apocalyptic number.

It is an amenable number.

206322728 is a deficient number, since it is larger than the sum of its proper divisors (185194552).

206322728 is a wasteful number, since it uses less digits than its factorization.

206322728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310816 (or 310812 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 206322728 is about 14363.9384571224. The cubic root of 206322728 is about 590.9023136881.

The spelling of 206322728 in words is "two hundred six million, three hundred twenty-two thousand, seven hundred twenty-eight".