Search a number
-
+
47284 = 2211821
BaseRepresentation
bin1011100010110100
32101212021
423202310
53003114
61002524
7254566
oct134264
971767
1047284
1132586
1223444
13186a3
1413336
15e024
hexb8b4

47284 has 6 divisors (see below), whose sum is σ = 82754. Its totient is φ = 23640.

The previous prime is 47279. The next prime is 47287. The reversal of 47284 is 48274.

47284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32400 + 14884 = 180^2 + 122^2 .

It is a plaindrome in base 12 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47287) by changing a digit.

47284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5907 + ... + 5914.

247284 is an apocalyptic number.

It is an amenable number.

47284 is a deficient number, since it is larger than the sum of its proper divisors (35470).

47284 is a wasteful number, since it uses less digits than its factorization.

47284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11825 (or 11823 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 47284 is about 217.4488445589. The cubic root of 47284 is about 36.1608032949.

Subtracting 47284 from its reverse (48274), we obtain a triangular number (990 = T44).

The spelling of 47284 in words is "forty-seven thousand, two hundred eighty-four".

Divisors: 1 2 4 11821 23642 47284