9805166272 has 42 divisors (see below), whose sum is σ = 21386776124. Its totient is φ = 4456890240.

The previous prime is 9805166237. The next prime is 9805166299. The reversal of 9805166272 is 2726615089.

It is a super-2 number, since 2×9805166272² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 625338 + ... + 640825.

Almost surely, 2^9805166272 is an apocalyptic number.

It is an amenable number.

9805166272 is an abundant number, since it is smaller than the sum of its proper divisors (11581609852).

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

9805166272 is a wasteful number, since it uses less digits than its factorization.

9805166272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266197 (or 1266176 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 9805166272 is about 99021.0395421094. The cubic root of 9805166272 is about 2140.3509390399.

The spelling of 9805166272 in words is "nine billion, eight hundred five million, one hundred sixty-six thousand, two hundred seventy-two".