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104247271 = 421924709
BaseRepresentation
bin1100011011010…
…10111111100111
321021011022101001
412031222333213
5203141403041
614202214131
72404041622
oct615527747
9237138331
10104247271
1153932577
122aab4347
131879ca9b
14dbb8db9
159243131
hex636afe7

104247271 has 4 divisors (see below), whose sum is σ = 104276200. Its totient is φ = 104218344.

The previous prime is 104247239. The next prime is 104247287. The reversal of 104247271 is 172742401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172742401 = 1313287877.

It is a cyclic number.

It is not a de Polignac number, because 104247271 - 25 = 104247239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104247571) 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, 8136 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (26069050).

Almost surely, 2104247271 is an apocalyptic number.

104247271 is a deficient number, since it is larger than the sum of its proper divisors (28929).

104247271 is an equidigital number, since it uses as much as digits as its factorization.

104247271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28928.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 104247271 is about 10210.1552877515. The cubic root of 104247271 is about 470.6393456813.

Adding to 104247271 its reverse (172742401), we get a palindrome (276989672).

The spelling of 104247271 in words is "one hundred four million, two hundred forty-seven thousand, two hundred seventy-one".

Divisors: 1 4219 24709 104247271