20108880 has 120 divisors (see below), whose sum is σ = 73700640. Its totient is φ = 4872960.

The previous prime is 20108873. The next prime is 20108917. The reversal of 20108880 is 8880102.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 6651 + ... + 9189.

It is an arithmetic number, because the mean of its divisors is an integer number (614172).

Almost surely, 2^20108880 is an apocalyptic number.

20108880 is a gapful number since it is divisible by the number (20) 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 20108880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36850320).

20108880 is an abundant number, since it is smaller than the sum of its proper divisors (53591760).

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

20108880 is a wasteful number, since it uses less digits than its factorization.

20108880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 20108880 is about 4484.2925863507. The cubic root of 20108880 is about 271.9334468082.

Adding to 20108880 its reverse (8880102), we get a palindrome (28988982).

It can be divided in two parts, 20 and 108880, that added together give a square (108900 = 330²).

The spelling of 20108880 in words is "twenty million, one hundred eight thousand, eight hundred eighty".