Base | Representation |
---|---|
bin | 101111101111111… |
… | …000001100101101 |
3 | 2001211101002022200 |
4 | 233233320030231 |
5 | 3120034030414 |
6 | 211253532113 |
7 | 25565032344 |
oct | 5757701455 |
9 | 2054332280 |
10 | 801080109 |
11 | 381209385 |
12 | 1a4344039 |
13 | c9c706cb |
14 | 7856ab5b |
15 | 4a4dc109 |
hex | 2fbf832d |
801080109 has 24 divisors (see below), whose sum is σ = 1219701600. Its totient is φ = 505245600.
The previous prime is 801080101. The next prime is 801080113. The reversal of 801080109 is 901080108.
It is not a de Polignac number, because 801080109 - 23 = 801080101 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (801080101) 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 23 ways as a sum of consecutive naturals, for example, 138934 + ... + 144584.
It is an arithmetic number, because the mean of its divisors is an integer number (50820900).
Almost surely, 2801080109 is an apocalyptic number.
It is an amenable number.
801080109 is a deficient number, since it is larger than the sum of its proper divisors (418621491).
801080109 is a wasteful number, since it uses less digits than its factorization.
801080109 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6505 (or 6502 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 27.
The square root of 801080109 is about 28303.3586169557. The cubic root of 801080109 is about 928.7353639973.
Subtracting 801080109 from its reverse (901080108), we obtain a palindrome (99999999).
The spelling of 801080109 in words is "eight hundred one million, eighty thousand, one hundred nine".
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