8721076 has 72 divisors (see below), whose sum is σ = 20086080. Its totient is φ = 3234816.

The previous prime is 8721061. The next prime is 8721077. The reversal of 8721076 is 6701278.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8721077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89860 + ... + 89956.

Almost surely, 2^8721076 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 8721076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10043040).

8721076 is an abundant number, since it is smaller than the sum of its proper divisors (11365004).

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

8721076 is a wasteful number, since it uses less digits than its factorization.

8721076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 8721076 is about 2953.1467962159. The cubic root of 8721076 is about 205.8369590005.

The spelling of 8721076 in words is "eight million, seven hundred twenty-one thousand, seventy-six".