9216423720 has 384 divisors, whose sum is σ = 35324640000. Its totient is φ = 2082931200.

The previous prime is 9216423719. The next prime is 9216423731. The reversal of 9216423720 is 273246129.

9216423720 is a `hidden beast` number, since 9 + 2 + 1 + 642 + 3 + 7 + 2 + 0 = 666.

9216423720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12471111 + ... + 12471849.

It is an arithmetic number, because the mean of its divisors is an integer number (91991250).

Almost surely, 2^9216423720 is an apocalyptic number.

9216423720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9216423720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17662320000).

9216423720 is an abundant number, since it is smaller than the sum of its proper divisors (26108216280).

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

9216423720 is a wasteful number, since it uses less digits than its factorization.

9216423720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 9216423720 is about 96002.2068496345. The cubic root of 9216423720 is about 2096.6252462562.

Adding to 9216423720 its reverse (273246129), we get a palindrome (9489669849).

The spelling of 9216423720 in words is "nine billion, two hundred sixteen million, four hundred twenty-three thousand, seven hundred twenty".