Base | Representation |
---|---|
bin | 1011011100001… |
… | …0000101010111 |
3 | 10100021200101220 |
4 | 2313002011113 |
5 | 44240342022 |
6 | 4432221423 |
7 | 1121554653 |
oct | 267020527 |
9 | 110250356 |
10 | 47980887 |
11 | 250a1829 |
12 | 1409a873 |
13 | 9c2c376 |
14 | 652da63 |
15 | 432b85c |
hex | 2dc2157 |
47980887 has 16 divisors (see below), whose sum is σ = 65072640. Its totient is φ = 31442112.
The previous prime is 47980861. The next prime is 47980969. The reversal of 47980887 is 78808974.
47980887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 47980887 - 211 = 47978839 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (47980837) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104763 + ... + 105219.
It is an arithmetic number, because the mean of its divisors is an integer number (4067040).
Almost surely, 247980887 is an apocalyptic number.
47980887 is a deficient number, since it is larger than the sum of its proper divisors (17091753).
47980887 is a wasteful number, since it uses less digits than its factorization.
47980887 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 982.
The product of its (nonzero) digits is 903168, while the sum is 51.
The square root of 47980887 is about 6926.8237309751. The cubic root of 47980887 is about 363.3758751822.
The spelling of 47980887 in words is "forty-seven million, nine hundred eighty thousand, eight hundred eighty-seven".
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