Base | Representation |
---|---|
bin | 1001100100100… |
… | …00000101110000 |
3 | 12121001202011020 |
4 | 10302100011300 |
5 | 131023010333 |
6 | 11544415440 |
7 | 1663246134 |
oct | 462200560 |
9 | 177052136 |
10 | 80281968 |
11 | 41354038 |
12 | 22a77580 |
13 | 1382b830 |
14 | a93b3c4 |
15 | 70ac3b3 |
hex | 4c90170 |
80281968 has 40 divisors (see below), whose sum is σ = 223350288. Its totient is φ = 24701952.
The previous prime is 80281963. The next prime is 80281991. The reversal of 80281968 is 86918208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80281961) 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, 63705 + ... + 64952.
Almost surely, 280281968 is an apocalyptic number.
It is an amenable number.
80281968 is an abundant number, since it is smaller than the sum of its proper divisors (143068320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80281968 is a wasteful number, since it uses less digits than its factorization.
80281968 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 128681 (or 128675 counting only the distinct ones).
The product of its (nonzero) digits is 55296, while the sum is 42.
The square root of 80281968 is about 8960.0205356908. The cubic root of 80281968 is about 431.3925791105.
The spelling of 80281968 in words is "eighty million, two hundred eighty-one thousand, nine hundred sixty-eight".
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