208422688 has 24 divisors (see below), whose sum is σ = 428174208. Its totient is φ = 99680064.

The previous prime is 208422667. The next prime is 208422689. The reversal of 208422688 is 886224802.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 208422688.

It is not an unprimeable number, because it can be changed into a prime (208422689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 140856 + ... + 142327.

It is an arithmetic number, because the mean of its divisors is an integer number (17840592).

Almost surely, 2^208422688 is an apocalyptic number.

It is an amenable number.

208422688 is an abundant number, since it is smaller than the sum of its proper divisors (219751520).

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

208422688 is a wasteful number, since it uses less digits than its factorization.

208422688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283216 (or 283208 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 208422688 is about 14436.8517343637. The cubic root of 208422688 is about 592.9002919718.

The spelling of 208422688 in words is "two hundred eight million, four hundred twenty-two thousand, six hundred eighty-eight".