8545820 has 48 divisors (see below), whose sum is σ = 19367040. Its totient is φ = 3157056.

The previous prime is 8545813. The next prime is 8545829. The reversal of 8545820 is 285458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8545829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16079 + ... + 16601.

It is an arithmetic number, because the mean of its divisors is an integer number (403480).

Almost surely, 2^8545820 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 8545820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9683520).

8545820 is an abundant number, since it is smaller than the sum of its proper divisors (10821220).

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

8545820 is a wasteful number, since it uses less digits than its factorization.

8545820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 8545820 is about 2923.3234511426. The cubic root of 8545820 is about 204.4488068365.

The spelling of 8545820 in words is "eight million, five hundred forty-five thousand, eight hundred twenty".