206820800 has 42 divisors (see below), whose sum is σ = 508912368. Its totient is φ = 82727680.

The previous prime is 206820773. The next prime is 206820839. The reversal of 206820800 is 8028602.

It is a self number, because there is not a number n which added to its sum of digits gives 206820800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63032 + ... + 66231.

Almost surely, 2^206820800 is an apocalyptic number.

206820800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206820800 is an abundant number, since it is smaller than the sum of its proper divisors (302091568).

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

206820800 is a wasteful number, since it uses less digits than its factorization.

206820800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129285 (or 129270 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 206820800 is about 14381.2655910389. The cubic root of 206820800 is about 591.3774195088.

The spelling of 206820800 in words is "two hundred six million, eight hundred twenty thousand, eight hundred".