Base | Representation |
---|---|
bin | 11000001111111001… |
… | …10001000010001000 |
3 | 1020121021011201202210 |
4 | 30013330301002020 |
5 | 203130134200010 |
6 | 5551442425120 |
7 | 640414325265 |
oct | 140774610210 |
9 | 36537151683 |
10 | 13018271880 |
11 | 5580525389 |
12 | 26339621a0 |
13 | 12c60cb673 |
14 | 8b6d6426c |
15 | 512d60b20 |
hex | 307f31088 |
13018271880 has 32 divisors (see below), whose sum is σ = 39054816000. Its totient is φ = 3471539136.
The previous prime is 13018271831. The next prime is 13018271909. The reversal of 13018271880 is 8817281031.
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, 54242680 + ... + 54242919.
It is an arithmetic number, because the mean of its divisors is an integer number (1220463000).
Almost surely, 213018271880 is an apocalyptic number.
13018271880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
13018271880 is an abundant number, since it is smaller than the sum of its proper divisors (26036544120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13018271880 is a wasteful number, since it uses less digits than its factorization.
13018271880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 108485613 (or 108485609 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 39.
The spelling of 13018271880 in words is "thirteen billion, eighteen million, two hundred seventy-one thousand, eight hundred eighty".
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