109720880 has 20 divisors (see below), whose sum is σ = 255101232. Its totient is φ = 43888320.

The previous prime is 109720867. The next prime is 109720913. The reversal of 109720880 is 88027901.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 109720880.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685676 + ... + 685835.

Almost surely, 2^109720880 is an apocalyptic number.

109720880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109720880 is an abundant number, since it is smaller than the sum of its proper divisors (145380352).

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

109720880 is a wasteful number, since it uses less digits than its factorization.

109720880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371524 (or 1371518 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 109720880 is about 10474.7735059046. The cubic root of 109720880 is about 478.7363754369.

The spelling of 109720880 in words is "one hundred nine million, seven hundred twenty thousand, eight hundred eighty".