Base | Representation |
---|---|
bin | 1001101000011… |
… | …10111010100101 |
3 | 12122001010202010 |
4 | 10310032322211 |
5 | 131141121240 |
6 | 12003504433 |
7 | 2000541504 |
oct | 464167245 |
9 | 178033663 |
10 | 80801445 |
11 | 4167935a |
12 | 23088119 |
13 | 1398110a |
14 | aa3483b |
15 | 7161280 |
hex | 4d0eea5 |
80801445 has 16 divisors (see below), whose sum is σ = 129511872. Its totient is φ = 43017600.
The previous prime is 80801431. The next prime is 80801449. The reversal of 80801445 is 54410808.
It is not a de Polignac number, because 80801445 - 26 = 80801381 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80801449) 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, 4534 + ... + 13496.
It is an arithmetic number, because the mean of its divisors is an integer number (8094492).
Almost surely, 280801445 is an apocalyptic number.
It is an amenable number.
80801445 is a deficient number, since it is larger than the sum of its proper divisors (48710427).
80801445 is a wasteful number, since it uses less digits than its factorization.
80801445 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9572.
The product of its (nonzero) digits is 5120, while the sum is 30.
The square root of 80801445 is about 8988.9623984084. The cubic root of 80801445 is about 432.3210437196.
The spelling of 80801445 in words is "eighty million, eight hundred one thousand, four hundred forty-five".
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