108720432 has 120 divisors (see below), whose sum is σ = 324979200. Its totient is φ = 33830784.

The previous prime is 108720427. The next prime is 108720439. The reversal of 108720432 is 234027801.

It is a junction number, because it is equal to n+sod(n) for n = 108720396 and 108720405.

It is not an unprimeable number, because it can be changed into a prime (108720439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215893 + ... + 216395.

It is an arithmetic number, because the mean of its divisors is an integer number (2708160).

Almost surely, 2^108720432 is an apocalyptic number.

108720432 is a gapful number since it is divisible by the number (12) 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 108720432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162489600).

108720432 is an abundant number, since it is smaller than the sum of its proper divisors (216258768).

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

108720432 is a wasteful number, since it uses less digits than its factorization.

108720432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 108720432 is about 10426.9090338412. The cubic root of 108720432 is about 477.2768720778.

The spelling of 108720432 in words is "one hundred eight million, seven hundred twenty thousand, four hundred thirty-two".