9180720 has 120 divisors (see below), whose sum is σ = 31685472. Its totient is φ = 2380800.

The previous prime is 9180671. The next prime is 9180727. The reversal of 9180720 is 270819.

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 (9180727) 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, 29365 + ... + 29675.

Almost surely, 2^9180720 is an apocalyptic number.

9180720 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 9180720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15842736).

9180720 is an abundant number, since it is smaller than the sum of its proper divisors (22504752).

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

9180720 is a wasteful number, since it uses less digits than its factorization.

9180720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 9180720 is about 3029.9702968841. The cubic root of 9180720 is about 209.3914354069.

The spelling of 9180720 in words is "nine million, one hundred eighty thousand, seven hundred twenty".