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13808228562 = 232276972
BaseRepresentation
bin11001101110000100…
…01101100011010010
31022122022121200121200
430313002031203102
5211234401303222
610202102132030
7666116002062
oct146702154322
938568550550
1013808228562
115946426547
122814421016
1313c097605b
1494dc373a2
1555c3a1eac
hex33708d8d2

13808228562 has 18 divisors (see below), whose sum is σ = 29918908773. Its totient is φ = 4602576672.

The previous prime is 13808228531. The next prime is 13808228591. The reversal of 13808228562 is 26582280831.

13808228562 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 82 + 2 + 8 + 562 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8417879001 + 5390349561 = 91749^2 + 73419^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅BA, here for A=2, B=83091.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 484698 + ... + 512394.

Almost surely, 213808228562 is an apocalyptic number.

13808228562 is an abundant number, since it is smaller than the sum of its proper divisors (16110680211).

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

13808228562 is an frugal number, since it uses more digits than its factorization.

13808228562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55402 (or 27702 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 13808228562 in words is "thirteen billion, eight hundred eight million, two hundred twenty-eight thousand, five hundred sixty-two".

Divisors: 1 2 3 6 9 18 27697 55394 83091 166182 249273 498546 767123809 1534247618 2301371427 4602742854 6904114281 13808228562