109638140 has 12 divisors (see below), whose sum is σ = 230240136. Its totient is φ = 43855248.

The previous prime is 109638127. The next prime is 109638163. The reversal of 109638140 is 41836901.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 109638097 and 109638106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740934 + ... + 2740973.

It is an arithmetic number, because the mean of its divisors is an integer number (19186678).

Almost surely, 2^109638140 is an apocalyptic number.

109638140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109638140 is an abundant number, since it is smaller than the sum of its proper divisors (120601996).

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

109638140 is a wasteful number, since it uses less digits than its factorization.

109638140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481916 (or 5481914 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 109638140 is about 10470.8232723124. The cubic root of 109638140 is about 478.6160075585.

The spelling of 109638140 in words is "one hundred nine million, six hundred thirty-eight thousand, one hundred forty".