7130720 has 48 divisors (see below), whose sum is σ = 17273088. Its totient is φ = 2780160.

The previous prime is 7130707. The next prime is 7130729. The reversal of 7130720 is 270317.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7130692 and 7130701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7130729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6017 + ... + 7103.

It is an arithmetic number, because the mean of its divisors is an integer number (359856).

Almost surely, 2^7130720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7130720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8636544).

7130720 is an abundant number, since it is smaller than the sum of its proper divisors (10142368).

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

7130720 is a wasteful number, since it uses less digits than its factorization.

7130720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 7130720 is about 2670.3408022198. The cubic root of 7130720 is about 192.4765361855.

The spelling of 7130720 in words is "seven million, one hundred thirty thousand, seven hundred twenty".