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102881061 = 3213998171
BaseRepresentation
bin1100010000111…
…01011100100101
321011120220021200
412020131130211
5202314143221
614113033113
72356321533
oct610353445
9234526250
10102881061
115308a078
122a555799
1318411c8a
14d941153
159073426
hex621d725

102881061 has 12 divisors (see below), whose sum is σ = 148730400. Its totient is φ = 68529960.

The previous prime is 102881039. The next prime is 102881071. The reversal of 102881061 is 160188201.

It is not a de Polignac number, because 102881061 - 26 = 102880997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102881011) 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 11 ways as a sum of consecutive naturals, for example, 8506 + ... + 16676.

It is an arithmetic number, because the mean of its divisors is an integer number (12394200).

Almost surely, 2102881061 is an apocalyptic number.

It is an amenable number.

102881061 is a deficient number, since it is larger than the sum of its proper divisors (45849339).

102881061 is a wasteful number, since it uses less digits than its factorization.

102881061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576 (or 9573 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 102881061 is about 10143.0301685443. The cubic root of 102881061 is about 468.5743141084.

The spelling of 102881061 in words is "one hundred two million, eight hundred eighty-one thousand, sixty-one".

Divisors: 1 3 9 1399 4197 8171 12591 24513 73539 11431229 34293687 102881061