Base | Representation |
---|---|
bin | 10011001011001001… |
… | …000110101110000000 |
3 | 1222010211000022221001 |
4 | 103023021012232000 |
5 | 314131013441343 |
6 | 13242532541344 |
7 | 1326122242360 |
oct | 231311065600 |
9 | 58124008831 |
10 | 20588030848 |
11 | 8805452330 |
12 | 3ba6a81854 |
13 | 1c31472598 |
14 | dd44349a0 |
15 | 8076c244d |
hex | 4cb246b80 |
20588030848 has 128 divisors (see below), whose sum is σ = 53359741440. Its totient is φ = 7672473600.
The previous prime is 20588030809. The next prime is 20588030857. The reversal of 20588030848 is 84803088502.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (46).
It is a junction number, because it is equal to n+sod(n) for n = 20588030798 and 20588030807.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181278 + ... + 272098.
It is an arithmetic number, because the mean of its divisors is an integer number (416872980).
Almost surely, 220588030848 is an apocalyptic number.
20588030848 is a gapful number since it is divisible by the number (28) 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 20588030848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26679870720).
20588030848 is an abundant number, since it is smaller than the sum of its proper divisors (32771710592).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20588030848 is a wasteful number, since it uses less digits than its factorization.
20588030848 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 90876 (or 90864 counting only the distinct ones).
The product of its (nonzero) digits is 491520, while the sum is 46.
The spelling of 20588030848 in words is "twenty billion, five hundred eighty-eight million, thirty thousand, eight hundred forty-eight".
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