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82316447 = 1271813581
BaseRepresentation
bin1001110100000…
…00110010011111
312201220002221022
410322000302133
5132033111242
612100154355
72016451433
oct472006237
9181802838
1082316447
1142513624
12236989bb
1314091875
14ad0a9c3
1573600d2
hex4e80c9f

82316447 has 8 divisors (see below), whose sum is σ = 83446272. Its totient is φ = 81194400.

The previous prime is 82316441. The next prime is 82316459. The reversal of 82316447 is 74461328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82316447 - 214 = 82300063 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 (82316441) 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 7 ways as a sum of consecutive naturals, for example, 21197 + ... + 24777.

It is an arithmetic number, because the mean of its divisors is an integer number (10430784).

Almost surely, 282316447 is an apocalyptic number.

82316447 is a deficient number, since it is larger than the sum of its proper divisors (1129825).

82316447 is a wasteful number, since it uses less digits than its factorization.

82316447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889.

The product of its digits is 32256, while the sum is 35.

The square root of 82316447 is about 9072.8411757288. The cubic root of 82316447 is about 435.0062922417.

The spelling of 82316447 in words is "eighty-two million, three hundred sixteen thousand, four hundred forty-seven".

Divisors: 1 127 181 3581 22987 454787 648161 82316447