208282638 has 8 divisors (see below), whose sum is σ = 416565288. Its totient is φ = 69427544.

The previous prime is 208282621. The next prime is 208282663. The reversal of 208282638 is 836282802.

It is a sphenic number, since it is the product of 3 distinct primes.

208282638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 208282596 and 208282605.

It is a congruent number.

It is an unprimeable number.

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, 17356881 + ... + 17356892.

It is an arithmetic number, because the mean of its divisors is an integer number (52070661).

Almost surely, 2^208282638 is an apocalyptic number.

208282638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

208282638 is a wasteful number, since it uses less digits than its factorization.

208282638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34713778.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 208282638 is about 14432.0004850333. Note that the first 3 decimals coincide. The cubic root of 208282638 is about 592.7674620764.

The spelling of 208282638 in words is "two hundred eight million, two hundred eighty-two thousand, six hundred thirty-eight".