8543920 has 160 divisors (see below), whose sum is σ = 26426880. Its totient is φ = 2488320.

The previous prime is 8543903. The next prime is 8543921. The reversal of 8543920 is 293458.

8543920 = T₁₇₅ + T₁₇₆ + ... + T₃₈₃.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8543921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117004 + ... + 117076.

It is an arithmetic number, because the mean of its divisors is an integer number (165168).

Almost surely, 2^8543920 is an apocalyptic number.

8543920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8543920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13213440).

8543920 is an abundant number, since it is smaller than the sum of its proper divisors (17882960).

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

8543920 is a wasteful number, since it uses less digits than its factorization.

8543920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 8543920 is about 2922.9984604854. The cubic root of 8543920 is about 204.4336539499.

It can be divided in two parts, 854 and 3920, that added together give a palindrome (4774).

The spelling of 8543920 in words is "eight million, five hundred forty-three thousand, nine hundred twenty".