109618220 has 48 divisors (see below), whose sum is σ = 246338400. Its totient is φ = 40849920.

The previous prime is 109618219. The next prime is 109618247. The reversal of 109618220 is 22816901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20816 + ... + 25544.

It is an arithmetic number, because the mean of its divisors is an integer number (5132050).

Almost surely, 2^109618220 is an apocalyptic number.

109618220 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 109618220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123169200).

109618220 is an abundant number, since it is smaller than the sum of its proper divisors (136720180).

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

109618220 is a wasteful number, since it uses less digits than its factorization.

109618220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 4816 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 109618220 is about 10469.8720144995. The cubic root of 109618220 is about 478.5870194456.

The spelling of 109618220 in words is "one hundred nine million, six hundred eighteen thousand, two hundred twenty".