Base | Representation |
---|---|
bin | 1001100100011… |
… | …01111001001001 |
3 | 12121001021210221 |
4 | 10302031321021 |
5 | 131022213334 |
6 | 11544310041 |
7 | 1663210660 |
oct | 462157111 |
9 | 177037727 |
10 | 80272969 |
11 | 413482a7 |
12 | 22a72321 |
13 | 138276ca |
14 | a937dd7 |
15 | 70a98b4 |
hex | 4c8de49 |
80272969 has 8 divisors (see below), whose sum is σ = 92207808. Its totient is φ = 68454960.
The previous prime is 80272937. The next prime is 80272987. The reversal of 80272969 is 96927208.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 80272969 - 25 = 80272937 is a prime.
It is a super-2 number, since 2×802729692 = 12887499104149922, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (80272909) 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 7 ways as a sum of consecutive naturals, for example, 27727 + ... + 30484.
It is an arithmetic number, because the mean of its divisors is an integer number (11525976).
Almost surely, 280272969 is an apocalyptic number.
It is an amenable number.
80272969 is a deficient number, since it is larger than the sum of its proper divisors (11934839).
80272969 is a wasteful number, since it uses less digits than its factorization.
80272969 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 58415.
The product of its (nonzero) digits is 108864, while the sum is 43.
The square root of 80272969 is about 8959.5183464291. The cubic root of 80272969 is about 431.3764598957.
The spelling of 80272969 in words is "eighty million, two hundred seventy-two thousand, nine hundred sixty-nine".
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