108187840 has 56 divisors (see below), whose sum is σ = 262524240. Its totient is φ = 42451968.

The previous prime is 108187823. The next prime is 108187873. The reversal of 108187840 is 48781801.

It is a self number, because there is not a number n which added to its sum of digits gives 108187840.

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 7 ways as a sum of consecutive naturals, for example, 13771 + ... + 20149.

Almost surely, 2^108187840 is an apocalyptic number.

108187840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108187840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131262120).

108187840 is an abundant number, since it is smaller than the sum of its proper divisors (154336400).

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

108187840 is an equidigital number, since it uses as much as digits as its factorization.

108187840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449 (or 6439 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 108187840 is about 10401.3383754207. The cubic root of 108187840 is about 476.4962458786.

The spelling of 108187840 in words is "one hundred eight million, one hundred eighty-seven thousand, eight hundred forty".