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13278289524 = 2231106524127
BaseRepresentation
bin11000101110111001…
…01001111001110100
31021021101102222220220
430113130221321310
5204143220231044
610033331454340
7650022412233
oct142734517164
937241388826
1013278289524
1156a42804a5
1226a6a573b0
131337c3a966
148dd6cab1a
1552aac3019
hex317729e74

13278289524 has 12 divisors (see below), whose sum is σ = 30982675584. Its totient is φ = 4426096504.

The previous prime is 13278289487. The next prime is 13278289529. The reversal of 13278289524 is 42598287231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13278289529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553262052 + ... + 553262075.

It is an arithmetic number, because the mean of its divisors is an integer number (2581889632).

Almost surely, 213278289524 is an apocalyptic number.

It is an amenable number.

13278289524 is an abundant number, since it is smaller than the sum of its proper divisors (17704386060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13278289524 is a wasteful number, since it uses less digits than its factorization.

13278289524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106524134 (or 1106524132 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 13278289524 in words is "thirteen billion, two hundred seventy-eight million, two hundred eighty-nine thousand, five hundred twenty-four".

Divisors: 1 2 3 4 6 12 1106524127 2213048254 3319572381 4426096508 6639144762 13278289524