Base | Representation |
---|---|
bin | 1011011011000… |
… | …1111101001111 |
3 | 10100011022210101 |
4 | 2312301331033 |
5 | 44231233311 |
6 | 4430551531 |
7 | 1121161246 |
oct | 266617517 |
9 | 110138711 |
10 | 47914831 |
11 | 25057138 |
12 | 140685a7 |
13 | 9c08293 |
14 | 651395d |
15 | 4316ec1 |
hex | 2db1f4f |
47914831 has 4 divisors (see below), whose sum is σ = 47943432. Its totient is φ = 47886232.
The previous prime is 47914813. The next prime is 47914859. The reversal of 47914831 is 13841974.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13841974 = 2 ⋅6920987.
It is a cyclic number.
It is not a de Polignac number, because 47914831 - 29 = 47914319 is a prime.
It is a super-2 number, since 2×479148312 = 4591662059517122, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (47914861) 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 3 ways as a sum of consecutive naturals, for example, 11620 + ... + 15193.
It is an arithmetic number, because the mean of its divisors is an integer number (11985858).
Almost surely, 247914831 is an apocalyptic number.
47914831 is a deficient number, since it is larger than the sum of its proper divisors (28601).
47914831 is a wasteful number, since it uses less digits than its factorization.
47914831 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28600.
The product of its digits is 24192, while the sum is 37.
The square root of 47914831 is about 6922.0539581832. The cubic root of 47914831 is about 363.2090436102.
The spelling of 47914831 in words is "forty-seven million, nine hundred fourteen thousand, eight hundred thirty-one".
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