Base | Representation |
---|---|
bin | 1001101000011… |
… | …10111011001001 |
3 | 12122001010210110 |
4 | 10310032323021 |
5 | 131141121411 |
6 | 12003504533 |
7 | 2000541555 |
oct | 464167311 |
9 | 178033713 |
10 | 80801481 |
11 | 41679392 |
12 | 23088149 |
13 | 13981137 |
14 | aa34865 |
15 | 71612a6 |
hex | 4d0eec9 |
80801481 has 4 divisors (see below), whose sum is σ = 107735312. Its totient is φ = 53867652.
The previous prime is 80801473. The next prime is 80801491. The reversal of 80801481 is 18410808.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is not a de Polignac number, because 80801481 - 23 = 80801473 is a prime.
It is a super-2 number, since 2×808014812 = 13057758663586722, which contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (80801431) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13466911 + ... + 13466916.
It is an arithmetic number, because the mean of its divisors is an integer number (26933828).
Almost surely, 280801481 is an apocalyptic number.
It is an amenable number.
80801481 is a deficient number, since it is larger than the sum of its proper divisors (26933831).
80801481 is a wasteful number, since it uses less digits than its factorization.
80801481 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26933830.
The product of its (nonzero) digits is 2048, while the sum is 30.
The square root of 80801481 is about 8988.9644008640. The cubic root of 80801481 is about 432.3211079246.
The spelling of 80801481 in words is "eighty million, eight hundred one thousand, four hundred eighty-one".
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