109647072 has 72 divisors (see below), whose sum is σ = 325385424. Its totient is φ = 34957824.

The previous prime is 109647071. The next prime is 109647077. The reversal of 109647072 is 270746901.

It is a happy number.

109647072 is a `hidden beast` number, since 1 + 0 + 9 + 647 + 0 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 (109647071) 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, 1653 + ... + 14900.

It is an arithmetic number, because the mean of its divisors is an integer number (4519242).

Almost surely, 2^109647072 is an apocalyptic number.

109647072 is a gapful number since it is divisible by the number (12) 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 109647072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162692712).

109647072 is an abundant number, since it is smaller than the sum of its proper divisors (215738352).

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

109647072 is a wasteful number, since it uses less digits than its factorization.

109647072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16592 (or 16581 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 109647072 is about 10471.2497821416. The cubic root of 109647072 is about 478.6290045019.

The spelling of 109647072 in words is "one hundred nine million, six hundred forty-seven thousand, seventy-two".