9721352862 has 120 divisors (see below), whose sum is σ = 24976241136. Its totient is φ = 2815098624.

The previous prime is 9721352857. The next prime is 9721352867. The reversal of 9721352862 is 2682531279.

It is an interprime number because it is at equal distance from previous prime (9721352857) and next prime (9721352867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9721352867) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 454983 + ... + 475869.

Almost surely, 2^9721352862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9721352862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12488120568).

9721352862 is an abundant number, since it is smaller than the sum of its proper divisors (15254888274).

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

9721352862 is a wasteful number, since it uses less digits than its factorization.

9721352862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20944 (or 20922 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 9721352862 is about 98596.9211588273. The cubic root of 9721352862 is about 2134.2349901541.

The spelling of 9721352862 in words is "nine billion, seven hundred twenty-one million, three hundred fifty-two thousand, eight hundred sixty-two".