Base | Representation |
---|---|
bin | 100100111111001111… |
… | …1000001010000010100 |
3 | 21121000201022212101212 |
4 | 1021332133001100110 |
5 | 2300133424102043 |
6 | 100253524040552 |
7 | 5511246242000 |
oct | 1117637012024 |
9 | 247021285355 |
10 | 79431472148 |
11 | 30760aa4756 |
12 | 13489533158 |
13 | 764b4082c2 |
14 | 3bb7465700 |
15 | 20ed61b018 |
hex | 127e7c1414 |
79431472148 has 48 divisors (see below), whose sum is σ = 162170131200. Its totient is φ = 34028392608.
The previous prime is 79431472147. The next prime is 79431472151. The reversal of 79431472148 is 84127413497.
It is a junction number, because it is equal to n+sod(n) for n = 79431472096 and 79431472105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (79431472147) 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 15 ways as a sum of consecutive naturals, for example, 3882161 + ... + 3902567.
It is an arithmetic number, because the mean of its divisors is an integer number (3378544400).
Almost surely, 279431472148 is an apocalyptic number.
It is an amenable number.
79431472148 is an abundant number, since it is smaller than the sum of its proper divisors (82738659052).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
79431472148 is a wasteful number, since it uses less digits than its factorization.
79431472148 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23269 (or 23253 counting only the distinct ones).
The product of its digits is 1354752, while the sum is 50.
The spelling of 79431472148 in words is "seventy-nine billion, four hundred thirty-one million, four hundred seventy-two thousand, one hundred forty-eight".
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