108887920 has 20 divisors (see below), whose sum is σ = 253164600. Its totient is φ = 43555136.

The previous prime is 108887887. The next prime is 108887921. The reversal of 108887920 is 29788801.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108887921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680470 + ... + 680629.

It is an arithmetic number, because the mean of its divisors is an integer number (12658230).

Almost surely, 2^108887920 is an apocalyptic number.

108887920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108887920 is an abundant number, since it is smaller than the sum of its proper divisors (144276680).

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

108887920 is a wasteful number, since it uses less digits than its factorization.

108887920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361112 (or 1361106 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 108887920 is about 10434.9374698654. The cubic root of 108887920 is about 477.5218341121.

The spelling of 108887920 in words is "one hundred eight million, eight hundred eighty-seven thousand, nine hundred twenty".