108205638 has 16 divisors (see below), whose sum is σ = 216539136. Its totient is φ = 36047240.

The previous prime is 108205619. The next prime is 108205661. The reversal of 108205638 is 836502801.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 108205599 and 108205608.

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, 8395 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (13533696).

Almost surely, 2^108205638 is an apocalyptic number.

108205638 is an abundant number, since it is smaller than the sum of its proper divisors (108333498).

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

108205638 is a wasteful number, since it uses less digits than its factorization.

108205638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10659.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 108205638 is about 10402.1939032110. The cubic root of 108205638 is about 476.5223739387.

The spelling of 108205638 in words is "one hundred eight million, two hundred five thousand, six hundred thirty-eight".