108259840 has 80 divisors (see below), whose sum is σ = 279622728. Its totient is φ = 39960576.

The previous prime is 108259831. The next prime is 108259849. The reversal of 108259840 is 48952801.

It is an interprime number because it is at equal distance from previous prime (108259831) and next prime (108259849).

It can be written as a sum of positive squares in 4 ways, for example, as 98724096 + 9535744 = 9936^2 + 3088^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 108259840.

It is not an unprimeable number, because it can be changed into a prime (108259849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31654 + ... + 34906.

Almost surely, 2^108259840 is an apocalyptic number.

108259840 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 108259840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139811364).

108259840 is an abundant number, since it is smaller than the sum of its proper divisors (171362888).

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

108259840 is an equidigital number, since it uses as much as digits as its factorization.

108259840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 108259840 is about 10404.7988928186. The cubic root of 108259840 is about 476.6019266458.

The spelling of 108259840 in words is "one hundred eight million, two hundred fifty-nine thousand, eight hundred forty".