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248279 = 318009
BaseRepresentation
bin111100100111010111
3110121120112
4330213113
530421104
65153235
72052563
oct744727
9417515
10248279
1115a599
12bb81b
1389015
14666a3
154d86e
hex3c9d7

248279 has 4 divisors (see below), whose sum is σ = 256320. Its totient is φ = 240240.

The previous prime is 248267. The next prime is 248291. The reversal of 248279 is 972842.

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

It is an interprime number because it is at equal distance from previous prime (248267) and next prime (248291).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-248279 is a prime.

It is a Duffinian number.

248279 is a modest number, since divided by 279 gives 248 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248299) 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, 3974 + ... + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (64080).

2248279 is an apocalyptic number.

248279 is a deficient number, since it is larger than the sum of its proper divisors (8041).

248279 is an equidigital number, since it uses as much as digits as its factorization.

248279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its digits is 8064, while the sum is 32.

The square root of 248279 is about 498.2760279203. The cubic root of 248279 is about 62.8511645731.

The spelling of 248279 in words is "two hundred forty-eight thousand, two hundred seventy-nine".

Divisors: 1 31 8009 248279