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248671 = 1391789
BaseRepresentation
bin111100101101011111
3110122010001
4330231133
530424141
65155131
72053663
oct745537
9418101
10248671
1115a915
12bbaa7
1389257
14668a3
154da31
hex3cb5f

248671 has 4 divisors (see below), whose sum is σ = 250600. Its totient is φ = 246744.

The previous prime is 248657. The next prime is 248683. The reversal of 248671 is 176842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248671 - 25 = 248639 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248621) 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 3 ways as a sum of consecutive naturals, for example, 756 + ... + 1033.

It is an arithmetic number, because the mean of its divisors is an integer number (62650).

2248671 is an apocalyptic number.

248671 is a deficient number, since it is larger than the sum of its proper divisors (1929).

248671 is a wasteful number, since it uses less digits than its factorization.

248671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its digits is 2688, while the sum is 28.

The square root of 248671 is about 498.6692290487. The cubic root of 248671 is about 62.8842250969.

It can be divided in two parts, 248 and 671, that added together give a palindrome (919).

The spelling of 248671 in words is "two hundred forty-eight thousand, six hundred seventy-one".

Divisors: 1 139 1789 248671