109369728 has 192 divisors, whose sum is σ = 347146800. Its totient is φ = 32845824.

The previous prime is 109369723. The next prime is 109369747. The reversal of 109369728 is 827963901.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109369723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1003338 + ... + 1003446.

Almost surely, 2^109369728 is an apocalyptic number.

109369728 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 109369728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173573400).

109369728 is an abundant number, since it is smaller than the sum of its proper divisors (237777072).

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

109369728 is a wasteful number, since it uses less digits than its factorization.

109369728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 109369728 is about 10457.9982788295. The cubic root of 109369728 is about 478.2251117805.

The spelling of 109369728 in words is "one hundred nine million, three hundred sixty-nine thousand, seven hundred twenty-eight".