206828885 has 16 divisors (see below), whose sum is σ = 263181312. Its totient is φ = 155500800.

The previous prime is 206828861. The next prime is 206828891. The reversal of 206828885 is 588828602.

It is not a de Polignac number, because 206828885 - 2⁶ = 206828821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76100 + ... + 78770.

It is an arithmetic number, because the mean of its divisors is an integer number (16448832).

Almost surely, 2^206828885 is an apocalyptic number.

It is an amenable number.

206828885 is a deficient number, since it is larger than the sum of its proper divisors (56352427).

206828885 is a wasteful number, since it uses less digits than its factorization.

206828885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604.

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 206828885 is about 14381.5466831631. The cubic root of 206828885 is about 591.3851254135.

The spelling of 206828885 in words is "two hundred six million, eight hundred twenty-eight thousand, eight hundred eighty-five".