| Base | Representation |
|---|---|
| bin | 101110011011… |
| … | …101110000000 |
| 3 | 211220102001202 |
| 4 | 232123232000 |
| 5 | 11104002120 |
| 6 | 1112520332 |
| 7 | 205314230 |
| oct | 56335600 |
| 9 | 24812052 |
| 10 | 12172160 |
| 11 | 6964140 |
| 12 | 40b00a8 |
| 13 | 26a2480 |
| 14 | 188bcc0 |
| 15 | 1106875 |
| hex | b9bb80 |
12172160 has 256 divisors, whose sum is σ = 41126400. Its totient is φ = 3317760.
The previous prime is 12172157. The next prime is 12172163. The reversal of 12172160 is 6127121.
12172160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (12172157) and next prime (12172163).
It is a super-2 number, since 2×121721602 = 296322958131200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12172163) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 640631 + ... + 640649.
It is an arithmetic number, because the mean of its divisors is an integer number (160650).
Almost surely, 212172160 is an apocalyptic number.
12172160 is a gapful number since it is divisible by the number (10) 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 12172160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20563200).
12172160 is an abundant number, since it is smaller than the sum of its proper divisors (28954240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12172160 is a wasteful number, since it uses less digits than its factorization.
12172160 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 69 (or 57 counting only the distinct ones).
The product of its (nonzero) digits is 168, while the sum is 20.
The square root of 12172160 is about 3488.8622787379. The cubic root of 12172160 is about 230.0325095824.
Adding to 12172160 its reverse (6127121), we get a palindrome (18299281).
The spelling of 12172160 in words is "twelve million, one hundred seventy-two thousand, one hundred sixty".
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