8549820 has 96 divisors (see below), whose sum is σ = 27095040. Its totient is φ = 2237760.

The previous prime is 8549797. The next prime is 8549837. The reversal of 8549820 is 289458.

8549820 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38229 + ... + 38451.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^8549820 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 8549820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13547520).

8549820 is an abundant number, since it is smaller than the sum of its proper divisors (18545220).

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

8549820 is a wasteful number, since it uses less digits than its factorization.

8549820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 8549820 is about 2924.0075239301. The cubic root of 8549820 is about 204.4807003106.

The spelling of 8549820 in words is "eight million, five hundred forty-nine thousand, eight hundred twenty".