8728314644 has 12 divisors (see below), whose sum is σ = 17456629344. Its totient is φ = 3740706264.

The previous prime is 8728314631. The next prime is 8728314659. The reversal of 8728314644 is 4464138278.

8728314644 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 155862734 + ... + 155862789.

It is an arithmetic number, because the mean of its divisors is an integer number (1454719112).

Almost surely, 2^8728314644 is an apocalyptic number.

It is an amenable number.

8728314644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8728314644 is a wasteful number, since it uses less digits than its factorization.

8728314644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311725534 (or 311725532 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 47.

The square root of 8728314644 is about 93425.4496590731. The cubic root of 8728314644 is about 2058.9389266407.

The spelling of 8728314644 in words is "eight billion, seven hundred twenty-eight million, three hundred fourteen thousand, six hundred forty-four".