Base | Representation |
---|---|
bin | 111110010001011011… |
… | …1100101001101101110 |
3 | 110210011210200011002110 |
4 | 1330202313211031232 |
5 | 4142334104404440 |
6 | 141233444104450 |
7 | 12442633406421 |
oct | 1744267451556 |
9 | 423153604073 |
10 | 133728981870 |
11 | 51794584430 |
12 | 21b01695126 |
13 | c7c2604b93 |
14 | 66888319b8 |
15 | 372a402080 |
hex | 1f22de536e |
133728981870 has 64 divisors (see below), whose sum is σ = 354060875520. Its totient is φ = 32054880000.
The previous prime is 133728981839. The next prime is 133728981901. The reversal of 133728981870 is 78189827331.
It is an interprime number because it is at equal distance from previous prime (133728981839) and next prime (133728981901).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 133728981870.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247256 + ... + 2305995.
It is an arithmetic number, because the mean of its divisors is an integer number (5532201180).
Almost surely, 2133728981870 is an apocalyptic number.
133728981870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
133728981870 is an abundant number, since it is smaller than the sum of its proper divisors (220331893650).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
133728981870 is a wasteful number, since it uses less digits than its factorization.
133728981870 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4553361.
The product of its (nonzero) digits is 4064256, while the sum is 57.
The spelling of 133728981870 in words is "one hundred thirty-three billion, seven hundred twenty-eight million, nine hundred eighty-one thousand, eight hundred seventy".
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