9578920 has 64 divisors (see below), whose sum is σ = 23562000. Its totient is φ = 3504384.

The previous prime is 9578917. The next prime is 9578957. The reversal of 9578920 is 298759.

It can be written as a sum of positive squares in 8 ways, for example, as 252004 + 9326916 = 502^2 + 3054^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87826 + ... + 87934.

Almost surely, 2^9578920 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 9578920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11781000).

9578920 is an abundant number, since it is smaller than the sum of its proper divisors (13983080).

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

9578920 is a wasteful number, since it uses less digits than its factorization.

9578920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 9578920 is about 3094.9830371102. The cubic root of 9578920 is about 212.3760384279.

The spelling of 9578920 in words is "nine million, five hundred seventy-eight thousand, nine hundred twenty".