205196808 has 128 divisors (see below), whose sum is σ = 570240000. Its totient is φ = 61270272.

The previous prime is 205196773. The next prime is 205196881. The reversal of 205196808 is 808691502.

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 31 ways as a sum of consecutive naturals, for example, 780085 + ... + 780347.

It is an arithmetic number, because the mean of its divisors is an integer number (4455000).

Almost surely, 2^205196808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205196808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285120000).

205196808 is an abundant number, since it is smaller than the sum of its proper divisors (365043192).

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

205196808 is a wasteful number, since it uses less digits than its factorization.

205196808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 205196808 is about 14324.6922480031. The cubic root of 205196808 is about 589.8254851089.

The spelling of 205196808 in words is "two hundred five million, one hundred ninety-six thousand, eight hundred eight".