Base | Representation |
---|---|
bin | 1001100100001… |
… | …01011011110001 |
3 | 12120222112021200 |
4 | 10302011123301 |
5 | 131020111241 |
6 | 11543441413 |
7 | 1663004652 |
oct | 462053361 |
9 | 176875250 |
10 | 80238321 |
11 | 41324269 |
12 | 22a56269 |
13 | 138149c7 |
14 | a929529 |
15 | 709e4b6 |
hex | 4c856f1 |
80238321 has 12 divisors (see below), whose sum is σ = 116013300. Its totient is φ = 53439840.
The previous prime is 80238293. The next prime is 80238359. The reversal of 80238321 is 12383208.
It can be written as a sum of positive squares in 2 ways, for example, as 70560000 + 9678321 = 8400^2 + 3111^2 .
It is a de Polignac number, because none of the positive numbers 2k-80238321 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (80238721) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6855 + ... + 14403.
It is an arithmetic number, because the mean of its divisors is an integer number (9667775).
Almost surely, 280238321 is an apocalyptic number.
It is an amenable number.
80238321 is a deficient number, since it is larger than the sum of its proper divisors (35774979).
80238321 is a wasteful number, since it uses less digits than its factorization.
80238321 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8736 (or 8733 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 27.
The square root of 80238321 is about 8957.5845516523. The cubic root of 80238321 is about 431.3143863538.
The spelling of 80238321 in words is "eighty million, two hundred thirty-eight thousand, three hundred twenty-one".
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