109345140 has 144 divisors (see below), whose sum is σ = 348566400. Its totient is φ = 28771200.

The previous prime is 109345121. The next prime is 109345157. The reversal of 109345140 is 41543901.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 724065 + ... + 724215.

It is an arithmetic number, because the mean of its divisors is an integer number (2420600).

Almost surely, 2^109345140 is an apocalyptic number.

109345140 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 109345140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174283200).

109345140 is an abundant number, since it is smaller than the sum of its proper divisors (239221260).

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

109345140 is a wasteful number, since it uses less digits than its factorization.

109345140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 109345140 is about 10456.8226531772. The cubic root of 109345140 is about 478.1892716368.

The spelling of 109345140 in words is "one hundred nine million, three hundred forty-five thousand, one hundred forty".