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82271441 = 721679009
BaseRepresentation
bin1001110011101…
…01110011010001
312201210211012102
410321311303101
5132030141231
612055210145
72016203300
oct471656321
9181724172
1082271441
114249282a
1223676955
1314077235
14acd8437
157351acb
hex4e75cd1

82271441 has 6 divisors (see below), whose sum is σ = 95703570. Its totient is φ = 70518336.

The previous prime is 82271419. The next prime is 82271447. The reversal of 82271441 is 14417228.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 22657600 = 7721^2 + 4760^2 .

It is not a de Polignac number, because 82271441 - 218 = 82009297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82271447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 839456 + ... + 839553.

It is an arithmetic number, because the mean of its divisors is an integer number (15950595).

Almost surely, 282271441 is an apocalyptic number.

It is an amenable number.

82271441 is a deficient number, since it is larger than the sum of its proper divisors (13432129).

82271441 is a wasteful number, since it uses less digits than its factorization.

82271441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679023 (or 1679016 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 82271441 is about 9070.3605771766. The cubic root of 82271441 is about 434.9269988036.

Adding to 82271441 its reverse (14417228), we get a palindrome (96688669).

The spelling of 82271441 in words is "eighty-two million, two hundred seventy-one thousand, four hundred forty-one".

Divisors: 1 7 49 1679009 11753063 82271441