109393920 has 144 divisors (see below), whose sum is σ = 379459080. Its totient is φ = 29147136.

The previous prime is 109393909. The next prime is 109393927. The reversal of 109393920 is 29393901.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109393927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91567 + ... + 92753.

Almost surely, 2^109393920 is an apocalyptic number.

109393920 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 109393920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189729540).

109393920 is an abundant number, since it is smaller than the sum of its proper divisors (270065160).

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

109393920 is a wasteful number, since it uses less digits than its factorization.

109393920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 109393920 is about 10459.1548415730. The cubic root of 109393920 is about 478.2603694617.

The spelling of 109393920 in words is "one hundred nine million, three hundred ninety-three thousand, nine hundred twenty".