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82371841 = 257320513
BaseRepresentation
bin1001110100011…
…10010100000001
312201222220220221
410322032110001
5132041344331
612101303041
72020102066
oct472162401
9181886827
1082371841
1142551202
1223704a81
13140b0b46
14ad22c6d
157371711
hex4e8e501

82371841 has 4 divisors (see below), whose sum is σ = 82692612. Its totient is φ = 82051072.

The previous prime is 82371827. The next prime is 82371853. The reversal of 82371841 is 14817328.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56565441 + 25806400 = 7521^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 82371841 - 27 = 82371713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82371797 and 82371806.

It is not an unprimeable number, because it can be changed into a prime (82371241) 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, 160000 + ... + 160513.

It is an arithmetic number, because the mean of its divisors is an integer number (20673153).

Almost surely, 282371841 is an apocalyptic number.

It is an amenable number.

82371841 is a deficient number, since it is larger than the sum of its proper divisors (320771).

82371841 is a wasteful number, since it uses less digits than its factorization.

82371841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320770.

The product of its digits is 10752, while the sum is 34.

The square root of 82371841 is about 9075.8933995503. The cubic root of 82371841 is about 435.1038480208.

The spelling of 82371841 in words is "eighty-two million, three hundred seventy-one thousand, eight hundred forty-one".

Divisors: 1 257 320513 82371841