108905280 has 112 divisors (see below), whose sum is σ = 377244864. Its totient is φ = 26398720.

The previous prime is 108905261. The next prime is 108905287. The reversal of 108905280 is 82509801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108905287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5404 + ... + 15716.

Almost surely, 2^108905280 is an apocalyptic number.

108905280 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 108905280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188622432).

108905280 is an abundant number, since it is smaller than the sum of its proper divisors (268339584).

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

108905280 is a wasteful number, since it uses less digits than its factorization.

108905280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10344 (or 10334 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 108905280 is about 10435.7692577021. The cubic root of 108905280 is about 477.5472098640.

The spelling of 108905280 in words is "one hundred eight million, nine hundred five thousand, two hundred eighty".