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13867131838 = 271960950513
BaseRepresentation
bin11001110101000101…
…11010001110111110
31022210102110021201111
430322202322032332
5211344441204323
610212004432234
71000432450540
oct147242721676
938712407644
1013867131838
1159766a843a
1228300a867a
1313ccc2aa71
149579ab690
15562639c0d
hex33a8ba3be

13867131838 has 16 divisors (see below), whose sum is σ = 23773908960. Its totient is φ = 5942635776.

The previous prime is 13867131833. The next prime is 13867131857. The reversal of 13867131838 is 83813176831.

It is a junction number, because it is equal to n+sod(n) for n = 13867131791 and 13867131800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13867131833) 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, 249270 + ... + 299782.

It is an arithmetic number, because the mean of its divisors is an integer number (1485869310).

Almost surely, 213867131838 is an apocalyptic number.

13867131838 is a deficient number, since it is larger than the sum of its proper divisors (9906777122).

13867131838 is a wasteful number, since it uses less digits than its factorization.

13867131838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70131.

The product of its digits is 580608, while the sum is 49.

The spelling of 13867131838 in words is "thirteen billion, eight hundred sixty-seven million, one hundred thirty-one thousand, eight hundred thirty-eight".

Divisors: 1 2 7 14 19609 39218 50513 101026 137263 274526 353591 707182 990509417 1981018834 6933565919 13867131838