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107817893 = 178971261
BaseRepresentation
bin1100110110100…
…10101110100101
321111212201100022
412123102232211
5210100133033
614410524525
72446302611
oct633225645
9244781308
10107817893
11559511a7
1230136745
1319450091
1410468341
1596eb098
hex66d2ba5

107817893 has 8 divisors (see below), whose sum is σ = 115444440. Its totient is φ = 100334080.

The previous prime is 107817887. The next prime is 107817901. The reversal of 107817893 is 398718701.

It can be written as a sum of positive squares in 4 ways, for example, as 13300609 + 94517284 = 3647^2 + 9722^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 107817893 - 24 = 107817877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107817833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34118 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (14430555).

Almost surely, 2107817893 is an apocalyptic number.

It is an amenable number.

107817893 is a deficient number, since it is larger than the sum of its proper divisors (7626547).

107817893 is an equidigital number, since it uses as much as digits as its factorization.

107817893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71367.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 107817893 is about 10383.5395217623. The cubic root of 107817893 is about 475.9525012628.

The spelling of 107817893 in words is "one hundred seven million, eight hundred seventeen thousand, eight hundred ninety-three".

Divisors: 1 17 89 1513 71261 1211437 6342229 107817893