208221076 has 24 divisors (see below), whose sum is σ = 438361280. Its totient is φ = 84540672.

The previous prime is 208221067. The next prime is 208221109. The reversal of 208221076 is 670122802.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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, 195165 + ... + 196228.

Almost surely, 2^208221076 is an apocalyptic number.

It is an amenable number.

208221076 is an abundant number, since it is smaller than the sum of its proper divisors (230140204).

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

208221076 is a wasteful number, since it uses less digits than its factorization.

208221076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391423 (or 391421 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 208221076 is about 14429.8674976592. The cubic root of 208221076 is about 592.7090549895.

Adding to 208221076 its reverse (670122802), we get a palindrome (878343878).

The spelling of 208221076 in words is "two hundred eight million, two hundred twenty-one thousand, seventy-six".