108123885 has 12 divisors (see below), whose sum is σ = 187414812. Its totient is φ = 57666048.

The previous prime is 108123881. The next prime is 108123901. The reversal of 108123885 is 588321801.

It can be written as a sum of positive squares in 2 ways, for example, as 77686596 + 30437289 = 8814^2 + 5517^2 .

It is not a de Polignac number, because 108123885 - 2² = 108123881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108123881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1201332 + ... + 1201421.

It is an arithmetic number, because the mean of its divisors is an integer number (15617901).

Almost surely, 2^108123885 is an apocalyptic number.

108123885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108123885 is a deficient number, since it is larger than the sum of its proper divisors (79290927).

108123885 is a wasteful number, since it uses less digits than its factorization.

108123885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402764 (or 2402761 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 108123885 is about 10398.2635569599. The cubic root of 108123885 is about 476.4023341404.

The spelling of 108123885 in words is "one hundred eight million, one hundred twenty-three thousand, eight hundred eighty-five".