971928812 has 24 divisors (see below), whose sum is σ = 1791552000. Its totient is φ = 460089936.

The previous prime is 971928809. The next prime is 971928817. The reversal of 971928812 is 218829179.

It is not an unprimeable number, because it can be changed into a prime (971928817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153689 + ... + 159887.

It is an arithmetic number, because the mean of its divisors is an integer number (74648000).

Almost surely, 2^971928812 is an apocalyptic number.

It is an amenable number.

971928812 is a deficient number, since it is larger than the sum of its proper divisors (819623188).

971928812 is a wasteful number, since it uses less digits than its factorization.

971928812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285 (or 8283 counting only the distinct ones).

The product of its digits is 145152, while the sum is 47.

The square root of 971928812 is about 31175.7728372530. The cubic root of 971928812 is about 990.5539911976.

The spelling of 971928812 in words is "nine hundred seventy-one million, nine hundred twenty-eight thousand, eight hundred twelve".