Base | Representation |
---|---|
bin | 1111001111100… |
… | …10111010101000 |
3 | 22220121121100012 |
4 | 13213302322220 |
5 | 230213411210 |
6 | 20404431052 |
7 | 3111620435 |
oct | 747627250 |
9 | 286547305 |
10 | 127872680 |
11 | 661a9701 |
12 | 369a8488 |
13 | 20652410 |
14 | 12da8b8c |
15 | b35d305 |
hex | 79f2ea8 |
127872680 has 32 divisors (see below), whose sum is σ = 309846600. Its totient is φ = 47214336.
The previous prime is 127872673. The next prime is 127872743. The reversal of 127872680 is 86278721.
It can be written as a sum of positive squares in 4 ways, for example, as 63648484 + 64224196 = 7978^2 + 8014^2 .
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, 122435 + ... + 123474.
Almost surely, 2127872680 is an apocalyptic number.
127872680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
127872680 is an abundant number, since it is smaller than the sum of its proper divisors (181973920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
127872680 is a wasteful number, since it uses less digits than its factorization.
127872680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 245933 (or 245929 counting only the distinct ones).
The product of its (nonzero) digits is 75264, while the sum is 41.
The square root of 127872680 is about 11308.0802968497. The cubic root of 127872680 is about 503.8012674950.
The spelling of 127872680 in words is "one hundred twenty-seven million, eight hundred seventy-two thousand, six hundred eighty".
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