108891648 has 80 divisors (see below), whose sum is σ = 322367760. Its totient is φ = 36292608.

The previous prime is 108891631. The next prime is 108891667. The reversal of 108891648 is 846198801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9886 + ... + 17762.

It is an arithmetic number, because the mean of its divisors is an integer number (4029597).

Almost surely, 2^108891648 is an apocalyptic number.

108891648 is a gapful number since it is divisible by the number (18) 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 108891648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161183880).

108891648 is an abundant number, since it is smaller than the sum of its proper divisors (213476112).

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

108891648 is an frugal number, since it uses more digits than its factorization.

108891648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904 (or 7882 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 108891648 is about 10435.1160990187. The cubic root of 108891648 is about 477.5272836945.

The spelling of 108891648 in words is "one hundred eight million, eight hundred ninety-one thousand, six hundred forty-eight".