9721152 has 84 divisors (see below), whose sum is σ = 31857696. Its totient is φ = 2776320.

The previous prime is 9721147. The next prime is 9721163. The reversal of 9721152 is 2511279.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2827 + ... + 5237.

Almost surely, 2^9721152 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 9721152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15928848).

9721152 is an abundant number, since it is smaller than the sum of its proper divisors (22136544).

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

9721152 is a wasteful number, since it uses less digits than its factorization.

9721152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2423 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 9721152 is about 3117.8762002363. The cubic root of 9721152 is about 213.4220290908.

The spelling of 9721152 in words is "nine million, seven hundred twenty-one thousand, one hundred fifty-two".