208881900 has 54 divisors (see below), whose sum is σ = 654731532. Its totient is φ = 55701600.

The previous prime is 208881857. The next prime is 208881901. The reversal of 208881900 is 9188802.

208881900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×208881900² = 87263296295220000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (208881901) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115146 + ... + 116945.

It is an arithmetic number, because the mean of its divisors is an integer number (12124658).

Almost surely, 2^208881900 is an apocalyptic number.

208881900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208881900 is an abundant number, since it is smaller than the sum of its proper divisors (445849632).

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

208881900 is a wasteful number, since it uses less digits than its factorization.

208881900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232111 (or 232101 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 208881900 is about 14452.7471437094. The cubic root of 208881900 is about 593.3354128895.

The spelling of 208881900 in words is "two hundred eight million, eight hundred eighty-one thousand, nine hundred".