9556820 has 96 divisors (see below), whose sum is σ = 25401600. Its totient is φ = 2939904.

The previous prime is 9556819. The next prime is 9556831. The reversal of 9556820 is 286559.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an Ulam number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 107336 + ... + 107424.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

Almost surely, 2^9556820 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 9556820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12700800).

9556820 is an abundant number, since it is smaller than the sum of its proper divisors (15844780).

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

9556820 is a wasteful number, since it uses less digits than its factorization.

9556820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 9556820 is about 3091.4106812263. The cubic root of 9556820 is about 212.2125849061.

The spelling of 9556820 in words is "nine million, five hundred fifty-six thousand, eight hundred twenty".