108087138 has 24 divisors (see below), whose sum is σ = 240519708. Its totient is φ = 35055072.

The previous prime is 108087137. The next prime is 108087149. The reversal of 108087138 is 831780801.

It can be written as a sum of positive squares in 2 ways, for example, as 100942209 + 7144929 = 10047^2 + 2673^2 .

It is not an unprimeable number, because it can be changed into a prime (108087137) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 80481 + ... + 81812.

Almost surely, 2^108087138 is an apocalyptic number.

108087138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

108087138 is an abundant number, since it is smaller than the sum of its proper divisors (132432570).

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

108087138 is a wasteful number, since it uses less digits than its factorization.

108087138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162338 (or 162335 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 108087138 is about 10396.4964290861. The cubic root of 108087138 is about 476.3483579686.

The spelling of 108087138 in words is "one hundred eight million, eighty-seven thousand, one hundred thirty-eight".