9225390720 has 768 divisors, whose sum is σ = 38874729600. Its totient is φ = 1839366144.

The previous prime is 9225390703. The next prime is 9225390761. The reversal of 9225390720 is 270935229.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23237562 + ... + 23237958.

Almost surely, 2^9225390720 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 9225390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19437364800).

9225390720 is an abundant number, since it is smaller than the sum of its proper divisors (29649338880).

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

9225390720 is a wasteful number, since it uses less digits than its factorization.

9225390720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 9225390720 is about 96048.8975470307. The cubic root of 9225390720 is about 2097.3049873081.

The spelling of 9225390720 in words is "nine billion, two hundred twenty-five million, three hundred ninety thousand, seven hundred twenty".