8936640672 has 24 divisors (see below), whose sum is σ = 23458682016. Its totient is φ = 2978880192.

The previous prime is 8936640649. The next prime is 8936640689. The reversal of 8936640672 is 2760466398.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×8936640672³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46544908 + ... + 46545099.

It is an arithmetic number, because the mean of its divisors is an integer number (977445084).

Almost surely, 2^8936640672 is an apocalyptic number.

It is an amenable number.

8936640672 is an abundant number, since it is smaller than the sum of its proper divisors (14522041344).

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

8936640672 is a wasteful number, since it uses less digits than its factorization.

8936640672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93090020 (or 93090012 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 8936640672 is about 94533.8070321935. The cubic root of 8936640672 is about 2075.1911119859.

The spelling of 8936640672 in words is "eight billion, nine hundred thirty-six million, six hundred forty thousand, six hundred seventy-two".