9008173720 has 384 divisors, whose sum is σ = 26785987200. Its totient is φ = 2698665984.

The previous prime is 9008173711. The next prime is 9008173723. The reversal of 9008173720 is 273718009.

It is a super-2 number, since 2×9008173720² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9008173720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9008173723) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53941077 + ... + 53941243.

It is an arithmetic number, because the mean of its divisors is an integer number (69755175).

Almost surely, 2^9008173720 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 9008173720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13392993600).

9008173720 is an abundant number, since it is smaller than the sum of its proper divisors (17777813480).

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

9008173720 is a wasteful number, since it uses less digits than its factorization.

9008173720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 9008173720 is about 94911.3993153615. The cubic root of 9008173720 is about 2080.7133370635.

The spelling of 9008173720 in words is "nine billion, eight million, one hundred seventy-three thousand, seven hundred twenty".