109031860 has 72 divisors (see below), whose sum is σ = 270273024. Its totient is φ = 36832320.

The previous prime is 109031837. The next prime is 109031873. The reversal of 109031860 is 68130901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68797 + ... + 70363.

It is an arithmetic number, because the mean of its divisors is an integer number (3753792).

Almost surely, 2^109031860 is an apocalyptic number.

109031860 is a gapful number since it is divisible by the number (10) 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 109031860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135136512).

109031860 is an abundant number, since it is smaller than the sum of its proper divisors (161241164).

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

109031860 is a wasteful number, since it uses less digits than its factorization.

109031860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 109031860 is about 10441.8322147026. The cubic root of 109031860 is about 477.7321550491.

The spelling of 109031860 in words is "one hundred nine million, thirty-one thousand, eight hundred sixty".