208867220 has 24 divisors (see below), whose sum is σ = 450477384. Its totient is φ = 81288576.

The previous prime is 208867213. The next prime is 208867237. The reversal of 208867220 is 22768802.

208867220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 58951684 + 149915536 = 7678^2 + 12244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140387 + ... + 141866.

It is an arithmetic number, because the mean of its divisors is an integer number (18769891).

Almost surely, 2^208867220 is an apocalyptic number.

208867220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208867220 is an abundant number, since it is smaller than the sum of its proper divisors (241610164).

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

208867220 is a wasteful number, since it uses less digits than its factorization.

208867220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282299 (or 282297 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 208867220 is about 14452.2392728601. The cubic root of 208867220 is about 593.3215129012.

The spelling of 208867220 in words is "two hundred eight million, eight hundred sixty-seven thousand, two hundred twenty".