Base | Representation |
---|---|
bin | 100010111101010010… |
… | …1010100011001110000 |
3 | 21011202211102022222112 |
4 | 1011322211110121300 |
5 | 2212221142003110 |
6 | 54253121024452 |
7 | 5265221242025 |
oct | 1057245243160 |
9 | 234684368875 |
10 | 75071047280 |
11 | 29923715a39 |
12 | 12671185128 |
13 | 7104c20648 |
14 | 38c22cd54c |
15 | 1e458ed405 |
hex | 117a954670 |
75071047280 has 40 divisors (see below), whose sum is σ = 174551728272. Its totient is φ = 30026433024.
The previous prime is 75071047279. The next prime is 75071047283. The reversal of 75071047280 is 8274017057.
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (75071047283) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068652 + ... + 2104628.
Almost surely, 275071047280 is an apocalyptic number.
It is an amenable number.
75071047280 is an abundant number, since it is smaller than the sum of its proper divisors (99480680992).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
75071047280 is a wasteful number, since it uses less digits than its factorization.
75071047280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 62073 (or 62067 counting only the distinct ones).
The product of its (nonzero) digits is 109760, while the sum is 41.
The spelling of 75071047280 in words is "seventy-five billion, seventy-one million, forty-seven thousand, two hundred eighty".
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