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82124913 = 3132105767
BaseRepresentation
bin1001110010100…
…10000001110001
312201112101012110
410321102001301
5132010444123
612052115533
72015023143
oct471220161
9181471173
1082124913
11423a2732
1223605ba9
1314025630
14ac9ac93
157323493
hex4e52071

82124913 has 8 divisors (see below), whose sum is σ = 117923008. Its totient is φ = 50538384.

The previous prime is 82124863. The next prime is 82124929. The reversal of 82124913 is 31942128.

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

It is not a de Polignac number, because 82124913 - 212 = 82120817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82124963) 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 7 ways as a sum of consecutive naturals, for example, 1052845 + ... + 1052922.

It is an arithmetic number, because the mean of its divisors is an integer number (14740376).

Almost surely, 282124913 is an apocalyptic number.

It is an amenable number.

82124913 is a deficient number, since it is larger than the sum of its proper divisors (35798095).

82124913 is a wasteful number, since it uses less digits than its factorization.

82124913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105783.

The product of its digits is 3456, while the sum is 30.

The square root of 82124913 is about 9062.2796800805. The cubic root of 82124913 is about 434.6686391816.

The spelling of 82124913 in words is "eighty-two million, one hundred twenty-four thousand, nine hundred thirteen".

Divisors: 1 3 13 39 2105767 6317301 27374971 82124913