9821452172 has 12 divisors (see below), whose sum is σ = 19642904400. Its totient is φ = 4209193776.

The previous prime is 9821452171. The next prime is 9821452187. The reversal of 9821452172 is 2712541289.

9821452172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (9821452171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175383047 + ... + 175383102.

It is an arithmetic number, because the mean of its divisors is an integer number (1636908700).

Almost surely, 2^9821452172 is an apocalyptic number.

It is an amenable number.

9821452172 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.

9821452172 is a wasteful number, since it uses less digits than its factorization.

9821452172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350766160 (or 350766158 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 9821452172 is about 99103.2399672180. The cubic root of 9821452172 is about 2141.5352895238.

The spelling of 9821452172 in words is "nine billion, eight hundred twenty-one million, four hundred fifty-two thousand, one hundred seventy-two".