108907720 has 32 divisors (see below), whose sum is σ = 247577400. Its totient is φ = 43112448.

The previous prime is 108907699. The next prime is 108907723. The reversal of 108907720 is 27709801.

It can be written as a sum of positive squares in 4 ways, for example, as 63776196 + 45131524 = 7986^2 + 6718^2 .

It is not an unprimeable number, because it can be changed into a prime (108907723) 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, 10155 + ... + 17914.

Almost surely, 2^108907720 is an apocalyptic number.

108907720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108907720 is an abundant number, since it is smaller than the sum of its proper divisors (138669680).

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

108907720 is a wasteful number, since it uses less digits than its factorization.

108907720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28177 (or 28173 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 108907720 is about 10435.8861626601. The cubic root of 108907720 is about 477.5507762858.

The spelling of 108907720 in words is "one hundred eight million, nine hundred seven thousand, seven hundred twenty".