972185805228 has 48 divisors (see below), whose sum is σ = 2535012224640. Its totient is φ = 287416348800.

The previous prime is 972185805193. The next prime is 972185805247. The reversal of 972185805228 is 822508581279.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89812198 + ... + 89823021.

It is an arithmetic number, because the mean of its divisors is an integer number (52812754680).

Almost surely, 2^972185805228 is an apocalyptic number.

It is an amenable number.

972185805228 is an abundant number, since it is smaller than the sum of its proper divisors (1562826419412).

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

972185805228 is a wasteful number, since it uses less digits than its factorization.

972185805228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179635278 (or 179635276 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 57.

The spelling of 972185805228 in words is "nine hundred seventy-two billion, one hundred eighty-five million, eight hundred five thousand, two hundred twenty-eight".