9866272 has 48 divisors (see below), whose sum is σ = 21517272. Its totient is φ = 4423680.

The previous prime is 9866261. The next prime is 9866291. The reversal of 9866272 is 2726689.

It can be written as a sum of positive squares in 4 ways, for example, as 9709456 + 156816 = 3116^2 + 396^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15072 + ... + 15712.

Almost surely, 2^9866272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9866272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10758636).

9866272 is an abundant number, since it is smaller than the sum of its proper divisors (11651000).

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

9866272 is a wasteful number, since it uses less digits than its factorization.

9866272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 693 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 9866272 is about 3141.0622407078. The cubic root of 9866272 is about 214.4787952008.

The spelling of 9866272 in words is "nine million, eight hundred sixty-six thousand, two hundred seventy-two".