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102841681 = 4313118257
BaseRepresentation
bin1100010000100…
…11110101010001
321011111220021011
412020103311101
5202311413211
614112130521
72356065655
oct610236521
9234456234
10102841681
1153062528
122a536a41
13183ca087
14d930a65
159066921
hex6213d51

102841681 has 8 divisors (see below), whose sum is σ = 106042464. Its totient is φ = 99677760.

The previous prime is 102841667. The next prime is 102841693. The reversal of 102841681 is 186148201.

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 102841681 - 25 = 102841649 is a prime.

It is a super-2 number, since 2×1028416812 = 21152822701811522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102841481) 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, 3496 + ... + 14761.

It is an arithmetic number, because the mean of its divisors is an integer number (13255308).

Almost surely, 2102841681 is an apocalyptic number.

It is an amenable number.

102841681 is a deficient number, since it is larger than the sum of its proper divisors (3200783).

102841681 is a wasteful number, since it uses less digits than its factorization.

102841681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 102841681 is about 10141.0887482558. The cubic root of 102841681 is about 468.5145207536.

Adding to 102841681 its reverse (186148201), we get a palindrome (288989882).

The spelling of 102841681 in words is "one hundred two million, eight hundred forty-one thousand, six hundred eighty-one".

Divisors: 1 43 131 5633 18257 785051 2391667 102841681