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82679849 = 7191933221
BaseRepresentation
bin1001110110110…
…01100000101001
312202120120102122
410323121200221
5132131223344
612112041025
72022524060
oct473314051
9182516378
1082679849
114274165a
1223833175
131418b0b5
14ada31d7
1573d2aee
hex4ed9829

82679849 has 16 divisors (see below), whose sum is σ = 100010880. Its totient is φ = 66769920.

The previous prime is 82679837. The next prime is 82679897. The reversal of 82679849 is 94897628.

It is not a de Polignac number, because 82679849 - 24 = 82679833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82679849.

It is not an unprimeable number, because it can be changed into a prime (82679249) 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 15 ways as a sum of consecutive naturals, for example, 24059 + ... + 27279.

It is an arithmetic number, because the mean of its divisors is an integer number (6250680).

Almost surely, 282679849 is an apocalyptic number.

It is an amenable number.

82679849 is a deficient number, since it is larger than the sum of its proper divisors (17331031).

82679849 is a wasteful number, since it uses less digits than its factorization.

82679849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440.

The product of its digits is 1741824, while the sum is 53.

The square root of 82679849 is about 9092.8460341084. The cubic root of 82679849 is about 435.6454925598.

The spelling of 82679849 in words is "eighty-two million, six hundred seventy-nine thousand, eight hundred forty-nine".

Divisors: 1 7 19 133 193 1351 3221 3667 22547 25669 61199 428393 621653 4351571 11811407 82679849