Base | Representation |
---|---|
bin | 100111111110… |
… | …1001110001101 |
3 | 1110102212220112 |
4 | 1033331032031 |
5 | 20331211031 |
6 | 2025125405 |
7 | 343105166 |
oct | 117751615 |
9 | 43385815 |
10 | 20960141 |
11 | 10916734 |
12 | 7029865 |
13 | 445b467 |
14 | 2ad876d |
15 | 1c9062b |
hex | 13fd38d |
20960141 has 4 divisors (see below), whose sum is σ = 21051900. Its totient is φ = 20868384.
The previous prime is 20960129. The next prime is 20960179. The reversal of 20960141 is 14106902.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14106902 = 2 ⋅7053451.
It can be written as a sum of positive squares in 2 ways, for example, as 9030025 + 11930116 = 3005^2 + 3454^2 .
It is a cyclic number.
It is not a de Polignac number, because 20960141 - 26 = 20960077 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20960941) 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, 45536 + ... + 45993.
It is an arithmetic number, because the mean of its divisors is an integer number (5262975).
Almost surely, 220960141 is an apocalyptic number.
It is an amenable number.
20960141 is a deficient number, since it is larger than the sum of its proper divisors (91759).
20960141 is an equidigital number, since it uses as much as digits as its factorization.
20960141 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 91758.
The product of its (nonzero) digits is 432, while the sum is 23.
The square root of 20960141 is about 4578.2246559119. The cubic root of 20960141 is about 275.7177547698.
The spelling of 20960141 in words is "twenty million, nine hundred sixty thousand, one hundred forty-one".
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