208808842 has 16 divisors (see below), whose sum is σ = 342263232. Its totient is φ = 94753120.

The previous prime is 208808837. The next prime is 208808849. The reversal of 208808842 is 248808802.

It is a happy number.

It is a super-2 number, since 2×208808842² = 87202264994761928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 208808795 and 208808804.

It is not an unprimeable number, because it can be changed into a prime (208808849) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5883 + ... + 21265.

It is an arithmetic number, because the mean of its divisors is an integer number (21391452).

Almost surely, 2^208808842 is an apocalyptic number.

208808842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

208808842 is a deficient number, since it is larger than the sum of its proper divisors (133454390).

208808842 is a wasteful number, since it uses less digits than its factorization.

208808842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16013.

The product of its (nonzero) digits is 65536, while the sum is 40.

The square root of 208808842 is about 14450.2194447005. The cubic root of 208808842 is about 593.2662303302.

Subtracting from 208808842 its sum of digits (40), we obtain a palindrome (208808802).

The spelling of 208808842 in words is "two hundred eight million, eight hundred eight thousand, eight hundred forty-two".