9520201728 has 120 divisors (see below), whose sum is σ = 28208454960. Its totient is φ = 3173253120.

The previous prime is 9520201661. The next prime is 9520201759. The reversal of 9520201728 is 8271020259.

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

It is a junction number, because it is equal to n+sod(n) for n = 9520201692 and 9520201701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431608 + ... + 453128.

It is an arithmetic number, because the mean of its divisors is an integer number (235070458).

Almost surely, 2^9520201728 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 9520201728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14104227480).

9520201728 is an abundant number, since it is smaller than the sum of its proper divisors (18688253232).

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

9520201728 is an equidigital number, since it uses as much as digits as its factorization.

9520201728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21558 (or 21526 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 9520201728 is about 97571.5210909413. The cubic root of 9520201728 is about 2119.4119740920.

The spelling of 9520201728 in words is "nine billion, five hundred twenty million, two hundred one thousand, seven hundred twenty-eight".