Base | Representation |
---|---|
bin | 1111001111101… |
… | …10101000101000 |
3 | 22220122101020100 |
4 | 13213312220220 |
5 | 230214403122 |
6 | 20405025400 |
7 | 3112013025 |
oct | 747665050 |
9 | 286571210 |
10 | 127887912 |
11 | 6620a099 |
12 | 369b5260 |
13 | 20659329 |
14 | 12db054c |
15 | b362aac |
hex | 79f6a28 |
127887912 has 96 divisors (see below), whose sum is σ = 374025600. Its totient is φ = 39355008.
The previous prime is 127887901. The next prime is 127887919. The reversal of 127887912 is 219788721.
It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (127887919) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46693 + ... + 49355.
It is an arithmetic number, because the mean of its divisors is an integer number (3896100).
Almost surely, 2127887912 is an apocalyptic number.
127887912 is a gapful number since it is divisible by the number (12) 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 127887912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187012800).
127887912 is an abundant number, since it is smaller than the sum of its proper divisors (246137688).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
127887912 is a wasteful number, since it uses less digits than its factorization.
127887912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2727 (or 2720 counting only the distinct ones).
The product of its digits is 112896, while the sum is 45.
The square root of 127887912 is about 11308.7537774947. The cubic root of 127887912 is about 503.8212707154.
The spelling of 127887912 in words is "one hundred twenty-seven million, eight hundred eighty-seven thousand, nine hundred twelve".
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