Base | Representation |
---|---|
bin | 100001100100111100… |
… | …1010110010010010101 |
3 | 20220010020112110000112 |
4 | 1003021321112102111 |
5 | 2140133310340040 |
6 | 53043025252405 |
7 | 5131605045335 |
oct | 1031171262225 |
9 | 226106473015 |
10 | 72106730645 |
11 | 28642407a84 |
12 | 11b84494105 |
13 | 6a51a50c31 |
14 | 36c07350c5 |
15 | 1d20557365 |
hex | 10c9e56495 |
72106730645 has 8 divisors (see below), whose sum is σ = 86537319840. Its totient is φ = 57679222480.
The previous prime is 72106730593. The next prime is 72106730671. The reversal of 72106730645 is 54603760127.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 72106730645 - 26 = 72106730581 is a prime.
It is a congruent number.
It is an unprimeable number.
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, 718451 + ... + 812640.
It is an arithmetic number, because the mean of its divisors is an integer number (10817164980).
Almost surely, 272106730645 is an apocalyptic number.
It is an amenable number.
72106730645 is a deficient number, since it is larger than the sum of its proper divisors (14430589195).
72106730645 is a wasteful number, since it uses less digits than its factorization.
72106730645 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1540515.
The product of its (nonzero) digits is 211680, while the sum is 41.
The spelling of 72106730645 in words is "seventy-two billion, one hundred six million, seven hundred thirty thousand, six hundred forty-five".
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