109371640 has 64 divisors (see below), whose sum is σ = 283046400. Its totient is φ = 37258368.

The previous prime is 109371631. The next prime is 109371643. The reversal of 109371640 is 46173901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109371643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45591 + ... + 47929.

It is an arithmetic number, because the mean of its divisors is an integer number (4422600).

Almost surely, 2^109371640 is an apocalyptic number.

109371640 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 109371640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141523200).

109371640 is an abundant number, since it is smaller than the sum of its proper divisors (173674760).

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

109371640 is a wasteful number, since it uses less digits than its factorization.

109371640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 109371640 is about 10458.0896917171. The cubic root of 109371640 is about 478.2278985391.

It can be divided in two parts, 109371 and 640, that added together give a palindrome (110011).

The spelling of 109371640 in words is "one hundred nine million, three hundred seventy-one thousand, six hundred forty".