Base | Representation |
---|---|
bin | 1011101101101… |
… | …0010100011011 |
3 | 10102102222221122 |
4 | 2323122110123 |
5 | 100034104411 |
6 | 4512555455 |
7 | 1134405311 |
oct | 273322433 |
9 | 112388848 |
10 | 49128731 |
11 | 25806163 |
12 | 14552b8b |
13 | a241972 |
14 | 674c0b1 |
15 | 44a69db |
hex | 2eda51b |
49128731 has 2 divisors, whose sum is σ = 49128732. Its totient is φ = 49128730.
The previous prime is 49128679. The next prime is 49128733. The reversal of 49128731 is 13782194.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 49128731 - 214 = 49112347 is a prime.
It is a super-2 number, since 2×491287312 = 4827264419340722, which contains 22 as substring.
It is a Sophie Germain prime.
Together with 49128733, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 49128691 and 49128700.
It is not a weakly prime, because it can be changed into another prime (49128733) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24564365 + 24564366.
It is an arithmetic number, because the mean of its divisors is an integer number (24564366).
Almost surely, 249128731 is an apocalyptic number.
49128731 is a deficient number, since it is larger than the sum of its proper divisors (1).
49128731 is an equidigital number, since it uses as much as digits as its factorization.
49128731 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 12096, while the sum is 35.
The square root of 49128731 is about 7009.1890401101. The cubic root of 49128731 is about 366.2507439015.
The spelling of 49128731 in words is "forty-nine million, one hundred twenty-eight thousand, seven hundred thirty-one".
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