8721074384 has 20 divisors (see below), whose sum is σ = 18433180320. Its totient is φ = 3964124640.

The previous prime is 8721074357. The next prime is 8721074407. The reversal of 8721074384 is 4834701278.

It is a super-2 number, since 2×8721074384² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24775604 + ... + 24775955.

It is an arithmetic number, because the mean of its divisors is an integer number (921659016).

Almost surely, 2^8721074384 is an apocalyptic number.

It is an amenable number.

8721074384 is an abundant number, since it is smaller than the sum of its proper divisors (9712105936).

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

8721074384 is a wasteful number, since it uses less digits than its factorization.

8721074384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49551578 (or 49551572 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 8721074384 is about 93386.6927565164. The cubic root of 8721074384 is about 2058.3694628672.

The spelling of 8721074384 in words is "eight billion, seven hundred twenty-one million, seventy-four thousand, three hundred eighty-four".