9964543028 has 24 divisors (see below), whose sum is σ = 19679194080. Its totient is φ = 4373153120.

The previous prime is 9964543021. The next prime is 9964543033. The reversal of 9964543028 is 8203454699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9964543021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3903326 + ... + 3905877.

It is an arithmetic number, because the mean of its divisors is an integer number (819966420).

Almost surely, 2^9964543028 is an apocalyptic number.

It is an amenable number.

9964543028 is a deficient number, since it is larger than the sum of its proper divisors (9714651052).

9964543028 is a wasteful number, since it uses less digits than its factorization.

9964543028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809247 (or 7809245 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The square root of 9964543028 is about 99822.5577111707. The cubic root of 9964543028 is about 2151.8853502419.

The spelling of 9964543028 in words is "nine billion, nine hundred sixty-four million, five hundred forty-three thousand, twenty-eight".