108305988 has 96 divisors (see below), whose sum is σ = 306647040. Its totient is φ = 29082240.

The previous prime is 108305983. The next prime is 108306007. The reversal of 108305988 is 889503801.

It is a super-2 number, since 2×108305988² = 23460374073312288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (108305983) 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 31 ways as a sum of consecutive naturals, for example, 117393 + ... + 118311.

It is an arithmetic number, because the mean of its divisors is an integer number (3194240).

Almost surely, 2^108305988 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 108305988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153323520).

108305988 is an abundant number, since it is smaller than the sum of its proper divisors (198341052).

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

108305988 is a wasteful number, since it uses less digits than its factorization.

108305988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 108305988 is about 10407.0162871017. The cubic root of 108305988 is about 476.6696375079.

The spelling of 108305988 in words is "one hundred eight million, three hundred five thousand, nine hundred eighty-eight".