109543680 has 216 divisors, whose sum is σ = 390767832. Its totient is φ = 28311552.

The previous prime is 109543673. The next prime is 109543751. The reversal of 109543680 is 86345901.

109543680 is a `hidden beast` number, since 109 + 543 + 6 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65028096 + 44515584 = 8064^2 + 6672^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 426112 + ... + 426368.

Almost surely, 2^109543680 is an apocalyptic number.

109543680 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 109543680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195383916).

109543680 is an abundant number, since it is smaller than the sum of its proper divisors (281224152).

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

109543680 is a wasteful number, since it uses less digits than its factorization.

109543680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 109543680 is about 10466.3116712622. The cubic root of 109543680 is about 478.4785156904.

The spelling of 109543680 in words is "one hundred nine million, five hundred forty-three thousand, six hundred eighty".