Base | Representation |
---|---|
bin | 1111100101110… |
… | …10101110111000 |
3 | 100010002201210101 |
4 | 13302322232320 |
5 | 231440211110 |
6 | 20551125144 |
7 | 3145452640 |
oct | 762725670 |
9 | 303081711 |
10 | 130788280 |
11 | 67910197 |
12 | 379737b4 |
13 | 2113351c |
14 | 13527520 |
15 | b73713a |
hex | 7cbabb8 |
130788280 has 32 divisors (see below), whose sum is σ = 336313440. Its totient is φ = 44841600.
The previous prime is 130788277. The next prime is 130788311. The reversal of 130788280 is 82887031.
It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233271 + ... + 233830.
It is an arithmetic number, because the mean of its divisors is an integer number (10509795).
Almost surely, 2130788280 is an apocalyptic number.
130788280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
130788280 is an abundant number, since it is smaller than the sum of its proper divisors (205525160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130788280 is a wasteful number, since it uses less digits than its factorization.
130788280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 467119 (or 467115 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 37.
The square root of 130788280 is about 11436.2703710607. The cubic root of 130788280 is about 507.6015537669.
The spelling of 130788280 in words is "one hundred thirty million, seven hundred eighty-eight thousand, two hundred eighty".
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