8729980 has 48 divisors (see below), whose sum is σ = 21159936. Its totient is φ = 2963520.

The previous prime is 8729977. The next prime is 8729983. The reversal of 8729980 is 899278.

8729980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8729977) and next prime (8729983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729983) 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, 17535 + ... + 18025.

It is an arithmetic number, because the mean of its divisors is an integer number (440832).

Almost surely, 2^8729980 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 8729980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10579968).

8729980 is an abundant number, since it is smaller than the sum of its proper divisors (12429956).

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

8729980 is a wasteful number, since it uses less digits than its factorization.

8729980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 8729980 is about 2954.6539560497. The cubic root of 8729980 is about 205.9069866323.

The spelling of 8729980 in words is "eight million, seven hundred twenty-nine thousand, nine hundred eighty".