Base | Representation |
---|---|
bin | 1001101001001… |
… | …11110100011001 |
3 | 12122020022200001 |
4 | 10310213310121 |
5 | 131202402244 |
6 | 12010013001 |
7 | 2001445054 |
oct | 464476431 |
9 | 178208601 |
10 | 80903449 |
11 | 41738a60 |
12 | 23117161 |
13 | 139b8683 |
14 | aa5da9b |
15 | 71815d4 |
hex | 4d27d19 |
80903449 has 8 divisors (see below), whose sum is σ = 89084448. Its totient is φ = 72860160.
The previous prime is 80903447. The next prime is 80903467. The reversal of 80903449 is 94430908.
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 80903449 - 21 = 80903447 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80903447) 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, 33192 + ... + 35545.
It is an arithmetic number, because the mean of its divisors is an integer number (11135556).
Almost surely, 280903449 is an apocalyptic number.
It is an amenable number.
80903449 is a deficient number, since it is larger than the sum of its proper divisors (8180999).
80903449 is a wasteful number, since it uses less digits than its factorization.
80903449 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68855.
The product of its (nonzero) digits is 31104, while the sum is 37.
The square root of 80903449 is about 8994.6344561633. The cubic root of 80903449 is about 432.5028883721.
The spelling of 80903449 in words is "eighty million, nine hundred three thousand, four hundred forty-nine".
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