Base | Representation |
---|---|
bin | 11100101011111001… |
… | …100000010111110000 |
3 | 2221111121000102220120 |
4 | 130223321200113300 |
5 | 1001040111004120 |
6 | 22052214010240 |
7 | 2140166304540 |
oct | 345371402760 |
9 | 87447012816 |
10 | 30801266160 |
11 | 1207656a175 |
12 | 5b77346980 |
13 | 2b9b39c3a2 |
14 | 16c2a23320 |
15 | c04151140 |
hex | 72be605f0 |
30801266160 has 80 divisors (see below), whose sum is σ = 109124491776. Its totient is φ = 7040289024.
The previous prime is 30801266159. The next prime is 30801266189. The reversal of 30801266160 is 6166210803.
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-4 number, since 4×308012661604 (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
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, 9165364 + ... + 9168723.
Almost surely, 230801266160 is an apocalyptic number.
30801266160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30801266160 is an abundant number, since it is smaller than the sum of its proper divisors (78323225616).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30801266160 is a wasteful number, since it uses less digits than its factorization.
30801266160 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18334110 (or 18334104 counting only the distinct ones).
The product of its (nonzero) digits is 10368, while the sum is 33.
Adding to 30801266160 its reverse (6166210803), we get a palindrome (36967476963).
The spelling of 30801266160 in words is "thirty billion, eight hundred one million, two hundred sixty-six thousand, one hundred sixty".
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