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48689 = 181269
BaseRepresentation
bin1011111000110001
32110210022
423320301
53024224
61013225
7261644
oct137061
973708
1048689
1133643
1224215
1319214
1413a5b
15e65e
hexbe31

48689 has 4 divisors (see below), whose sum is σ = 49140. Its totient is φ = 48240.

The previous prime is 48679. The next prime is 48731. The reversal of 48689 is 98684.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1600 + 47089 = 40^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 48689 - 24 = 48673 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 48689.

It is not an unprimeable number, because it can be changed into a prime (48619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 315.

It is an arithmetic number, because the mean of its divisors is an integer number (12285).

248689 is an apocalyptic number.

It is an amenable number.

48689 is a deficient number, since it is larger than the sum of its proper divisors (451).

48689 is a wasteful number, since it uses less digits than its factorization.

48689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450.

The product of its digits is 13824, while the sum is 35.

The square root of 48689 is about 220.6558406206. The cubic root of 48689 is about 36.5154747669.

It can be divided in two parts, 486 and 89, that added together give a palindrome (575).

The spelling of 48689 in words is "forty-eight thousand, six hundred eighty-nine".

Divisors: 1 181 269 48689