7328720 has 80 divisors (see below), whose sum is σ = 20355840. Its totient is φ = 2399232.

The previous prime is 7328719. The next prime is 7328747. The reversal of 7328720 is 278237.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12596 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

Almost surely, 2^7328720 is an apocalyptic number.

7328720 is a gapful number since it is divisible by the number (70) 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 7328720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10177920).

7328720 is an abundant number, since it is smaller than the sum of its proper divisors (13027120).

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

7328720 is a wasteful number, since it uses less digits than its factorization.

7328720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 7328720 is about 2707.1608744218. The cubic root of 7328720 is about 194.2418070990.

The spelling of 7328720 in words is "seven million, three hundred twenty-eight thousand, seven hundred twenty".