9722816 has 28 divisors (see below), whose sum is σ = 19747992. Its totient is φ = 4747008.

The previous prime is 9722807. The next prime is 9722819. The reversal of 9722816 is 6182279.

9722816 = 208² + 209² + ... + 336².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9722819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986 + ... + 4518.

Almost surely, 2^9722816 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 9722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9873996).

9722816 is an abundant number, since it is smaller than the sum of its proper divisors (10025176).

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

9722816 is a wasteful number, since it uses less digits than its factorization.

9722816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588 (or 3578 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 9722816 is about 3118.1430371296. The cubic root of 9722816 is about 213.4342057682.

The spelling of 9722816 in words is "nine million, seven hundred twenty-two thousand, eight hundred sixteen".