109238688 has 144 divisors (see below), whose sum is σ = 338476320. Its totient is φ = 33219072.

The previous prime is 109238687. The next prime is 109238713. The reversal of 109238688 is 886832901.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×109238688² = 23866181911922688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109238687) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 610183 + ... + 610361.

It is an arithmetic number, because the mean of its divisors is an integer number (2350530).

Almost surely, 2^109238688 is an apocalyptic number.

109238688 is a gapful number since it is divisible by the number (18) 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 109238688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169238160).

109238688 is an abundant number, since it is smaller than the sum of its proper divisors (229237632).

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

109238688 is a wasteful number, since it uses less digits than its factorization.

109238688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 109238688 is about 10451.7313398307. The cubic root of 109238688 is about 478.0340422643.

The spelling of 109238688 in words is "one hundred nine million, two hundred thirty-eight thousand, six hundred eighty-eight".