7280727320 has 64 divisors (see below), whose sum is σ = 16779121920. Its totient is φ = 2841761664.

The previous prime is 7280727313. The next prime is 7280727323. The reversal of 7280727320 is 237270827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280727323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003629 + ... + 3006051.

It is an arithmetic number, because the mean of its divisors is an integer number (262173780).

Almost surely, 2^7280727320 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 7280727320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8389560960).

7280727320 is an abundant number, since it is smaller than the sum of its proper divisors (9498394600).

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

7280727320 is a wasteful number, since it uses less digits than its factorization.

7280727320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 7280727320 is about 85327.1780852971. The cubic root of 7280727320 is about 1938.1687576674.

The spelling of 7280727320 in words is "seven billion, two hundred eighty million, seven hundred twenty-seven thousand, three hundred twenty".