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248471 = 2411031
BaseRepresentation
bin111100101010010111
3110121211122
4330222113
530422341
65154155
72053256
oct745227
9417748
10248471
1115a753
12bb95b
1389132
146679d
154d94b
hex3ca97

248471 has 4 divisors (see below), whose sum is σ = 249744. Its totient is φ = 247200.

The previous prime is 248461. The next prime is 248473. The reversal of 248471 is 174842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174842 = 287421.

It is a cyclic number.

It is not a de Polignac number, because 248471 - 26 = 248407 is a prime.

It is a super-3 number, since 3×2484713 = 46020186918573333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 248471.

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 248471.

It is not an unprimeable number, because it can be changed into a prime (248473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275 + ... + 756.

It is an arithmetic number, because the mean of its divisors is an integer number (62436).

2248471 is an apocalyptic number.

248471 is a deficient number, since it is larger than the sum of its proper divisors (1273).

248471 is a wasteful number, since it uses less digits than its factorization.

248471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its digits is 1792, while the sum is 26.

The square root of 248471 is about 498.4686549824. The cubic root of 248471 is about 62.8673618273.

The spelling of 248471 in words is "two hundred forty-eight thousand, four hundred seventy-one".

Divisors: 1 241 1031 248471