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12881926630 = 2517353214663
BaseRepresentation
bin10111111111101001…
…01001100111100110
31020020202121200020201
423333310221213212
5202340233123010
65530132221114
7634140366256
oct137764514746
936222550221
1012881926630
11551056a161
1225b616a79a
1312a3aa09c1
148a2bd1966
15505dcc23a
hex2ffd299e6

12881926630 has 32 divisors (see below), whose sum is σ = 24621102144. Its totient is φ = 4835905536.

The previous prime is 12881926583. The next prime is 12881926633. The reversal of 12881926630 is 3662918821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881926633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47322 + ... + 167341.

It is an arithmetic number, because the mean of its divisors is an integer number (769409442).

Almost surely, 212881926630 is an apocalyptic number.

12881926630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12881926630 is a deficient number, since it is larger than the sum of its proper divisors (11739175514).

12881926630 is a wasteful number, since it uses less digits than its factorization.

12881926630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215040.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 12881926630 in words is "twelve billion, eight hundred eighty-one million, nine hundred twenty-six thousand, six hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 353 706 1765 3530 6001 12002 30005 60010 214663 429326 1073315 2146630 3649271 7298542 18246355 36492710 75776039 151552078 378880195 757760390 1288192663 2576385326 6440963315 12881926630