Base | Representation |
---|---|
bin | 111111100110… |
… | …010111011000 |
3 | 1011101000222111 |
4 | 333212113120 |
5 | 13232002331 |
6 | 1353202104 |
7 | 261466021 |
oct | 77462730 |
9 | 34330874 |
10 | 16672216 |
11 | 94580a0 |
12 | 5700334 |
13 | 35b9822 |
14 | 22ddc48 |
15 | 16e4db1 |
hex | fe65d8 |
16672216 has 64 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 7109760.
The previous prime is 16672207. The next prime is 16672231. The reversal of 16672216 is 61227661.
It is a happy number.
It is a congruent number.
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, 119875 + ... + 120013.
It is an arithmetic number, because the mean of its divisors is an integer number (567000).
It is a vampire number, since it can be written as 2726 ⋅ 6116 (with its own digits).
Almost surely, 216672216 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 16672216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144000).
16672216 is an abundant number, since it is smaller than the sum of its proper divisors (19615784).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16672216 is a wasteful number, since it uses less digits than its factorization.
With its predecessor (16672215) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (232).
16672216 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 232 (or 228 counting only the distinct ones).
The product of its digits is 6048, while the sum is 31.
The square root of 16672216 is about 4083.1624998278. The cubic root of 16672216 is about 255.4648243618.
Adding to 16672216 its reverse (61227661), we get a palindrome (77899877).
It can be divided in two parts, 1667 and 2216, that added together give a palindrome (3883).
The spelling of 16672216 in words is "sixteen million, six hundred seventy-two thousand, two hundred sixteen".
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