9219930720 has 768 divisors, whose sum is σ = 40317419520. Its totient is φ = 1708646400.

The previous prime is 9219930701. The next prime is 9219930787. The reversal of 9219930720 is 270399129.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14894571 + ... + 14895189.

It is an arithmetic number, because the mean of its divisors is an integer number (52496640).

Almost surely, 2^9219930720 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 9219930720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20158709760).

9219930720 is an abundant number, since it is smaller than the sum of its proper divisors (31097488800).

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

9219930720 is a wasteful number, since it uses less digits than its factorization.

9219930720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 9219930720 is about 96020.4703175318. The cubic root of 9219930720 is about 2096.8911459345.

It can be divided in two parts, 9219 and 930720, that added together give a palindrome (939939).

The spelling of 9219930720 in words is "nine billion, two hundred nineteen million, nine hundred thirty thousand, seven hundred twenty".