8913728646 has 32 divisors (see below), whose sum is σ = 19834752000. Its totient is φ = 2967273000.

The previous prime is 8913728641. The next prime is 8913728653. The reversal of 8913728646 is 6468273198.

8913728646 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 8913728592 and 8913728601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8913728641) 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, 69346 + ... + 150453.

It is an arithmetic number, because the mean of its divisors is an integer number (619836000).

Almost surely, 2^8913728646 is an apocalyptic number.

8913728646 is an abundant number, since it is smaller than the sum of its proper divisors (10921023354).

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

8913728646 is a wasteful number, since it uses less digits than its factorization.

8913728646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220561 (or 220555 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 8913728646 is about 94412.5449609320. The cubic root of 8913728646 is about 2073.4161152270.

The spelling of 8913728646 in words is "eight billion, nine hundred thirteen million, seven hundred twenty-eight thousand, six hundred forty-six".