8542720 has 80 divisors (see below), whose sum is σ = 21212928. Its totient is φ = 3297280.

The previous prime is 8542711. The next prime is 8542747. The reversal of 8542720 is 272458.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120285 + ... + 120355.

Almost surely, 2^8542720 is an apocalyptic number.

8542720 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 8542720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10606464).

8542720 is an abundant number, since it is smaller than the sum of its proper divisors (12670208).

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

8542720 is an equidigital number, since it uses as much as digits as its factorization.

8542720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8542720 is about 2922.7931846095. The cubic root of 8542720 is about 204.4240825482.

The spelling of 8542720 in words is "eight million, five hundred forty-two thousand, seven hundred twenty".