Base | Representation |
---|---|
bin | 1101001100001001… |
… | …11001110111011101 |
3 | 200021111122211022000 |
4 | 12212010321313131 |
5 | 104000301130444 |
6 | 3130400112513 |
7 | 340323544140 |
oct | 64604716735 |
9 | 20244584260 |
10 | 7081270749 |
11 | 3004213583 |
12 | 1457605739 |
13 | 88b0bc847 |
14 | 4b2674057 |
15 | 2b6a1e469 |
hex | 1a6139ddd |
7081270749 has 32 divisors (see below), whose sum is σ = 11993667840. Its totient is φ = 4045018176.
The previous prime is 7081270733. The next prime is 7081270787. The reversal of 7081270749 is 9470721807.
It is a happy number.
7081270749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 7081270749 - 24 = 7081270733 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7081270549) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781167 + ... + 790179.
It is an arithmetic number, because the mean of its divisors is an integer number (374802120).
Almost surely, 27081270749 is an apocalyptic number.
It is an amenable number.
7081270749 is a deficient number, since it is larger than the sum of its proper divisors (4912397091).
7081270749 is a wasteful number, since it uses less digits than its factorization.
7081270749 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13186 (or 13180 counting only the distinct ones).
The product of its (nonzero) digits is 197568, while the sum is 45.
The square root of 7081270749 is about 84150.2866840036. The cubic root of 7081270749 is about 1920.3058277484.
The spelling of 7081270749 in words is "seven billion, eighty-one million, two hundred seventy thousand, seven hundred forty-nine".
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