Base | Representation |
---|---|
bin | 1001101001110… |
… | …10101110010101 |
3 | 12122101020220001 |
4 | 10310322232111 |
5 | 131212342020 |
6 | 12011411301 |
7 | 2002216606 |
oct | 464725625 |
9 | 178336801 |
10 | 80980885 |
11 | 41791157 |
12 | 23153b31 |
13 | 13a149ab |
14 | aa7ddad |
15 | 719950a |
hex | 4d3ab95 |
80980885 has 8 divisors (see below), whose sum is σ = 98037720. Its totient is φ = 64210944.
The previous prime is 80980849. The next prime is 80980909. The reversal of 80980885 is 58808908.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 4977361 + 76003524 = 2231^2 + 8718^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 80980885 - 215 = 80948117 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71100 + ... + 72229.
It is an arithmetic number, because the mean of its divisors is an integer number (12254715).
Almost surely, 280980885 is an apocalyptic number.
It is an amenable number.
80980885 is a deficient number, since it is larger than the sum of its proper divisors (17056835).
80980885 is a wasteful number, since it uses less digits than its factorization.
80980885 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 143447.
The product of its (nonzero) digits is 184320, while the sum is 46.
The square root of 80980885 is about 8998.9379928967. The cubic root of 80980885 is about 432.6408331053.
The spelling of 80980885 in words is "eighty million, nine hundred eighty thousand, eight hundred eighty-five".
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