| Base | Representation |
|---|---|
| bin | 11001110100101… |
| … | …10011010001000 |
| 3 | 120002121120112000 |
| 4 | 30322112122020 |
| 5 | 420423411403 |
| 6 | 33254551000 |
| 7 | 5240156100 |
| oct | 1472263210 |
| 9 | 502546460 |
| 10 | 216622728 |
| 11 | 101306953 |
| 12 | 60668460 |
| 13 | 35b5743a |
| 14 | 20aac200 |
| 15 | 1403e7a3 |
| hex | ce96688 |
216622728 has 192 divisors, whose sum is σ = 710539200. Its totient is φ = 60963840.
The previous prime is 216622723. The next prime is 216622729. The reversal of 216622728 is 827226612.
216622728 is a `hidden beast` number, since 2 + 1 + 6 + 622 + 7 + 28 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 216622692 and 216622701.
It is not an unprimeable number, because it can be changed into a prime (216622723) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1026543 + ... + 1026753.
It is an arithmetic number, because the mean of its divisors is an integer number (3700725).
Almost surely, 2216622728 is an apocalyptic number.
216622728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 216622728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355269600).
216622728 is an abundant number, since it is smaller than the sum of its proper divisors (493916472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216622728 is a wasteful number, since it uses less digits than its factorization.
216622728 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 337 (or 320 counting only the distinct ones).
The product of its digits is 32256, while the sum is 36.
The square root of 216622728 is about 14718.1088459082. The cubic root of 216622728 is about 600.5760467732.
The spelling of 216622728 in words is "two hundred sixteen million, six hundred twenty-two thousand, seven hundred twenty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.078 sec. • engine limits •