8813406728 has 64 divisors (see below), whose sum is σ = 20176742400. Its totient is φ = 3524938560.

The previous prime is 8813406703. The next prime is 8813406757. The reversal of 8813406728 is 8276043188.

It is a super-2 number, since 2×8813406728² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9473 + ... + 133103.

It is an arithmetic number, because the mean of its divisors is an integer number (315261600).

Almost surely, 2^8813406728 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 8813406728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10088371200).

8813406728 is an abundant number, since it is smaller than the sum of its proper divisors (11363335672).

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

8813406728 is a wasteful number, since it uses less digits than its factorization.

8813406728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123730 (or 123726 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 8813406728 is about 93879.7461010627. The cubic root of 8813406728 is about 2065.6081458028.

The spelling of 8813406728 in words is "eight billion, eight hundred thirteen million, four hundred six thousand, seven hundred twenty-eight".