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102702115 = 5181283401
BaseRepresentation
bin1100001111100…
…01110000100011
321011020210211001
412013301300203
5202242431430
614105132431
72354645035
oct607616043
9234223731
10102702115
1152a7768a
122a48a117
131837b6a9
14d8d5c55
15903a3ca
hex61f1c23

102702115 has 16 divisors (see below), whose sum is σ = 124671456. Its totient is φ = 81216000.

The previous prime is 102702113. The next prime is 102702143. The reversal of 102702115 is 511207201.

It is not a de Polignac number, because 102702115 - 21 = 102702113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102702092 and 102702101.

It is not an unprimeable number, because it can be changed into a prime (102702113) 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, 255915 + ... + 256315.

It is an arithmetic number, because the mean of its divisors is an integer number (7791966).

Almost surely, 2102702115 is an apocalyptic number.

102702115 is a deficient number, since it is larger than the sum of its proper divisors (21969341).

102702115 is a wasteful number, since it uses less digits than its factorization.

102702115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 102702115 is about 10134.2051982383. The cubic root of 102702115 is about 468.3024851313.

Adding to 102702115 its reverse (511207201), we get a palindrome (613909316).

The spelling of 102702115 in words is "one hundred two million, seven hundred two thousand, one hundred fifteen".

Divisors: 1 5 181 283 401 905 1415 2005 51223 72581 113483 256115 362905 567415 20540423 102702115