Base | Representation |
---|---|
bin | 1011110111111… |
… | …0101010100101 |
3 | 10110201012100120 |
4 | 2331332222211 |
5 | 100222130033 |
6 | 4535232153 |
7 | 1143211011 |
oct | 275765245 |
9 | 113635316 |
10 | 49801893 |
11 | 26125999 |
12 | 14818659 |
13 | a41919b |
14 | 6885541 |
15 | 458b1b3 |
hex | 2f7eaa5 |
49801893 has 8 divisors (see below), whose sum is σ = 66880800. Its totient is φ = 32962128.
The previous prime is 49801883. The next prime is 49801897. The reversal of 49801893 is 39810894.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 49801893 - 214 = 49785509 is a prime.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (49801897) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59298 + ... + 60131.
It is an arithmetic number, because the mean of its divisors is an integer number (8360100).
Almost surely, 249801893 is an apocalyptic number.
It is an amenable number.
49801893 is a deficient number, since it is larger than the sum of its proper divisors (17078907).
49801893 is a wasteful number, since it uses less digits than its factorization.
49801893 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 119571.
The product of its (nonzero) digits is 62208, while the sum is 42.
The square root of 49801893 is about 7057.0456283065. The cubic root of 49801893 is about 367.9159508941.
Subtracting from 49801893 its reverse (39810894), we obtain a palindrome (9990999).
The spelling of 49801893 in words is "forty-nine million, eight hundred one thousand, eight hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.081 sec. • engine limits •