Base | Representation |
---|---|
bin | 1001100111010… |
… | …01100011100101 |
3 | 12121202100211120 |
4 | 10303221203211 |
5 | 131121222141 |
6 | 12000324153 |
7 | 1666333410 |
oct | 463514345 |
9 | 177670746 |
10 | 80648421 |
11 | 41584397 |
12 | 23013659 |
13 | 13929579 |
14 | a9d4b77 |
15 | 7130c66 |
hex | 4ce98e5 |
80648421 has 8 divisors (see below), whose sum is σ = 122892864. Its totient is φ = 46084800.
The previous prime is 80648417. The next prime is 80648423. The reversal of 80648421 is 12484608.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 80648421 - 22 = 80648417 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80648423) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1920180 + ... + 1920221.
It is an arithmetic number, because the mean of its divisors is an integer number (15361608).
Almost surely, 280648421 is an apocalyptic number.
It is an amenable number.
80648421 is a deficient number, since it is larger than the sum of its proper divisors (42244443).
80648421 is a wasteful number, since it uses less digits than its factorization.
80648421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3840411.
The product of its (nonzero) digits is 12288, while the sum is 33.
The square root of 80648421 is about 8980.4465924585. The cubic root of 80648421 is about 432.0479574246.
The spelling of 80648421 in words is "eighty million, six hundred forty-eight thousand, four hundred twenty-one".
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