9144720 has 120 divisors (see below), whose sum is σ = 33107256. Its totient is φ = 2248704.

The previous prime is 9144701. The next prime is 9144727. The reversal of 9144720 is 274419.

It is a happy number.

9144720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1327104 + 7817616 = 1152^2 + 2796^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (9144727) 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, 8872 + ... + 9848.

Almost surely, 2^9144720 is an apocalyptic number.

9144720 is a gapful number since it is divisible by the number (90) 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 9144720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16553628).

9144720 is an abundant number, since it is smaller than the sum of its proper divisors (23962536).

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

9144720 is a wasteful number, since it uses less digits than its factorization.

9144720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 9144720 is about 3024.0238094301. The cubic root of 9144720 is about 209.1173840567.

The spelling of 9144720 in words is "nine million, one hundred forty-four thousand, seven hundred twenty".