9720509340 has 48 divisors (see below), whose sum is σ = 27243947808. Its totient is φ = 2589609984.

The previous prime is 9720509317. The next prime is 9720509363. The reversal of 9720509340 is 439050279.

It is an interprime number because it is at equal distance from previous prime (9720509317) and next prime (9720509363).

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, 16437 + ... + 140396.

It is an arithmetic number, because the mean of its divisors is an integer number (567582246).

Almost surely, 2^9720509340 is an apocalyptic number.

It is an amenable number.

9720509340 is an abundant number, since it is smaller than the sum of its proper divisors (17523438468).

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

9720509340 is a wasteful number, since it uses less digits than its factorization.

9720509340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157878 (or 157876 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 9720509340 is about 98592.6434375304. The cubic root of 9720509340 is about 2134.1732591630.

The spelling of 9720509340 in words is "nine billion, seven hundred twenty million, five hundred nine thousand, three hundred forty".