Base | Representation |
---|---|
bin | 10010101110011100… |
… | …000101100000111100 |
3 | 1220220020212101001100 |
4 | 102232130011200330 |
5 | 312134223424023 |
6 | 13123051213100 |
7 | 1311154103310 |
oct | 225634054074 |
9 | 56806771040 |
10 | 20106467388 |
11 | 85886385a7 |
12 | 3a91747190 |
13 | 1b857740a7 |
14 | d8a4bbb40 |
15 | 7ca29bc43 |
hex | 4ae70583c |
20106467388 has 72 divisors (see below), whose sum is σ = 58098360320. Its totient is φ = 5743418400.
The previous prime is 20106467383. The next prime is 20106467389. The reversal of 20106467388 is 88376460102.
20106467388 is a `hidden beast` number, since 2 + 0 + 106 + 467 + 3 + 88 = 666.
It is a super-4 number, since 4×201064673884 (a number of 42 digits) contains 4444 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20106467383) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2192613 + ... + 2201763.
Almost surely, 220106467388 is an apocalyptic number.
20106467388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
20106467388 is an abundant number, since it is smaller than the sum of its proper divisors (37991892932).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20106467388 is a wasteful number, since it uses less digits than its factorization.
20106467388 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17887 (or 17882 counting only the distinct ones).
The product of its (nonzero) digits is 387072, while the sum is 45.
The spelling of 20106467388 in words is "twenty billion, one hundred six million, four hundred sixty-seven thousand, three hundred eighty-eight".
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