Base | Representation |
---|---|
bin | 1001101000000… |
… | …01010101001001 |
3 | 12121221022102020 |
4 | 10310001111021 |
5 | 131132331201 |
6 | 12002355053 |
7 | 2000220333 |
oct | 464012511 |
9 | 177838366 |
10 | 80745801 |
11 | 41640574 |
12 | 2305ba89 |
13 | 139619a6 |
14 | aa1c453 |
15 | 714ea36 |
hex | 4d01549 |
80745801 has 32 divisors (see below), whose sum is σ = 125245440. Its totient is φ = 45897984.
The previous prime is 80745781. The next prime is 80745809. The reversal of 80745801 is 10854708.
It is a happy number.
It is not a de Polignac number, because 80745801 - 26 = 80745737 is a prime.
It is not an unprimeable number, because it can be changed into a prime (80745809) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20476 + ... + 24098.
It is an arithmetic number, because the mean of its divisors is an integer number (3913920).
Almost surely, 280745801 is an apocalyptic number.
It is an amenable number.
80745801 is a deficient number, since it is larger than the sum of its proper divisors (44499639).
80745801 is a wasteful number, since it uses less digits than its factorization.
80745801 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3685.
The product of its (nonzero) digits is 8960, while the sum is 33.
The square root of 80745801 is about 8985.8667361585. The cubic root of 80745801 is about 432.2217814835.
The spelling of 80745801 in words is "eighty million, seven hundred forty-five thousand, eight hundred one".
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