1108105728 has 80 divisors (see below), whose sum is σ = 2959498080. Its totient is φ = 368439296.

The previous prime is 1108105717. The next prime is 1108105769. The reversal of 1108105728 is 8275018011.

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, 901018 + ... + 902246.

It is an arithmetic number, because the mean of its divisors is an integer number (36993726).

Almost surely, 2^1108105728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1108105728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479749040).

1108105728 is an abundant number, since it is smaller than the sum of its proper divisors (1851392352).

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

1108105728 is an equidigital number, since it uses as much as digits as its factorization.

1108105728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 1108105728 is about 33288.2220612637. Note that the first 3 decimals coincide. The cubic root of 1108105728 is about 1034.8094830080.

The spelling of 1108105728 in words is "one billion, one hundred eight million, one hundred five thousand, seven hundred twenty-eight".