206700022728 has 48 divisors (see below), whose sum is σ = 571723476480. Its totient is φ = 67434048864.

The previous prime is 206700022717. The next prime is 206700022741. The reversal of 206700022728 is 827220007602.

206700022728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 206700022692 and 206700022701.

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 11 ways as a sum of consecutive naturals, for example, 30537400 + ... + 30544167.

It is an arithmetic number, because the mean of its divisors is an integer number (11910905760).

Almost surely, 2^206700022728 is an apocalyptic number.

It is an amenable number.

206700022728 is an abundant number, since it is smaller than the sum of its proper divisors (365023453752).

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

206700022728 is a wasteful number, since it uses less digits than its factorization.

206700022728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61081626 (or 61081619 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 206700022728 in words is "two hundred six billion, seven hundred million, twenty-two thousand, seven hundred twenty-eight".