8736720 has 80 divisors (see below), whose sum is σ = 27587520. Its totient is φ = 2286592.

The previous prime is 8736719. The next prime is 8736727. The reversal of 8736720 is 276378.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8736727) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13852 + ... + 14468.

It is an arithmetic number, because the mean of its divisors is an integer number (344844).

Almost surely, 2^8736720 is an apocalyptic number.

8736720 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 8736720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13793760).

8736720 is an abundant number, since it is smaller than the sum of its proper divisors (18850800).

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

8736720 is a wasteful number, since it uses less digits than its factorization.

8736720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 8736720 is about 2955.7943094877. The cubic root of 8736720 is about 205.9599633130.

The spelling of 8736720 in words is "eight million, seven hundred thirty-six thousand, seven hundred twenty".