9721340 has 24 divisors (see below), whose sum is σ = 20629392. Its totient is φ = 3847680.

The previous prime is 9721319. The next prime is 9721357. The reversal of 9721340 is 431279.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (859558).

Almost surely, 2^9721340 is an apocalyptic number.

It is an amenable number.

9721340 is an abundant number, since it is smaller than the sum of its proper divisors (10908052).

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

9721340 is a wasteful number, since it uses less digits than its factorization.

9721340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117 (or 5115 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 9721340 is about 3117.9063488181. The cubic root of 9721340 is about 213.4234048908.

The spelling of 9721340 in words is "nine million, seven hundred twenty-one thousand, three hundred forty".