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104493815 = 5172942391
BaseRepresentation
bin1100011101001…
…11001011110111
321021121211120022
412032213023313
5203222300230
614211355355
72406116456
oct616471367
9237554508
10104493815
1153a90828
122abb2b5b
131885807a
14dc40b9d
1592911e5
hex63a72f7

104493815 has 16 divisors (see below), whose sum is σ = 137350080. Its totient is φ = 75962880.

The previous prime is 104493811. The next prime is 104493821. The reversal of 104493815 is 518394401.

It is not a de Polignac number, because 104493815 - 22 = 104493811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104493811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18731 + ... + 23660.

It is an arithmetic number, because the mean of its divisors is an integer number (8584380).

Almost surely, 2104493815 is an apocalyptic number.

104493815 is a deficient number, since it is larger than the sum of its proper divisors (32856265).

104493815 is a wasteful number, since it uses less digits than its factorization.

104493815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42442.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 104493815 is about 10222.2216274154. The cubic root of 104493815 is about 471.0100730653.

The spelling of 104493815 in words is "one hundred four million, four hundred ninety-three thousand, eight hundred fifteen".

Divisors: 1 5 17 29 85 145 493 2465 42391 211955 720647 1229339 3603235 6146695 20898763 104493815