Base | Representation |
---|---|
bin | 1001100111010… |
… | …01101011010001 |
3 | 12121202101111210 |
4 | 10303221223101 |
5 | 131121231123 |
6 | 12000330333 |
7 | 1666335012 |
oct | 463515321 |
9 | 177671453 |
10 | 80648913 |
11 | 415847a4 |
12 | 230139a9 |
13 | 13929867 |
14 | a9d5009 |
15 | 7130e93 |
hex | 4ce9ad1 |
80648913 has 16 divisors (see below), whose sum is σ = 111703680. Its totient is φ = 51695616.
The previous prime is 80648903. The next prime is 80648917. The reversal of 80648913 is 31984608.
It is not a de Polignac number, because 80648913 - 26 = 80648849 is a prime.
It is not an unprimeable number, because it can be changed into a prime (80648917) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20556 + ... + 24162.
It is an arithmetic number, because the mean of its divisors is an integer number (6981480).
Almost surely, 280648913 is an apocalyptic number.
It is an amenable number.
80648913 is a deficient number, since it is larger than the sum of its proper divisors (31054767).
80648913 is a wasteful number, since it uses less digits than its factorization.
80648913 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3896.
The product of its (nonzero) digits is 41472, while the sum is 39.
The square root of 80648913 is about 8980.4739852638. The cubic root of 80648913 is about 432.0488360000.
The spelling of 80648913 in words is "eighty million, six hundred forty-eight thousand, nine hundred thirteen".
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