Base | Representation |
---|---|
bin | 11100101110000100… |
… | …101011100000000000 |
3 | 2221121010200000000000 |
4 | 130232010223200000 |
5 | 1001123430443020 |
6 | 22100000000000 |
7 | 2141121355656 |
oct | 345604534000 |
9 | 87533600000 |
10 | 30837749760 |
11 | 12095118904 |
12 | 5b87600000 |
13 | 2ba5b0450c |
14 | 16c77dcdd6 |
15 | c0745b090 |
hex | 72e12b800 |
30837749760 has 576 divisors, whose sum is σ = 117517327200. Its totient is φ = 7739670528.
The previous prime is 30837749737. The next prime is 30837749771. The reversal of 30837749760 is 6794773803.
It is a happy number.
30837749760 is a `hidden beast` number, since 3 + 0 + 83 + 77 + 497 + 6 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (576).
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a nialpdrome in base 6.
It is a junction number, because it is equal to n+sod(n) for n = 30837749697 and 30837749706.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1813985272 + ... + 1813985288.
Almost surely, 230837749760 is an apocalyptic number.
30837749760 is a gapful number since it is divisible by the number (30) 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 30837749760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58758663600).
30837749760 is an abundant number, since it is smaller than the sum of its proper divisors (86679577440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30837749760 is an frugal number, since it uses more digits than its factorization.
30837749760 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 77 (or 27 counting only the distinct ones).
The product of its (nonzero) digits is 5334336, while the sum is 54.
The spelling of 30837749760 in words is "thirty billion, eight hundred thirty-seven million, seven hundred forty-nine thousand, seven hundred sixty".
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