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13872872406 = 2317477873677
BaseRepresentation
bin11001110101110001…
…10011101111010110
31022210211020221022010
430322320303233112
5211402423404111
610212331445050
71000532320101
oct147270635726
938724227263
1013872872406
115979969408
122831bb6786
13140118a953
14958663738
15562dc0aa6
hex33ae33bd6

13872872406 has 64 divisors (see below), whose sum is σ = 30049201152. Its totient is φ = 4253102592.

The previous prime is 13872872393. The next prime is 13872872443. The reversal of 13872872406 is 60427827831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3771040 + ... + 3774716.

It is an arithmetic number, because the mean of its divisors is an integer number (469518768).

Almost surely, 213872872406 is an apocalyptic number.

13872872406 is an abundant number, since it is smaller than the sum of its proper divisors (16176328746).

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

13872872406 is a wasteful number, since it uses less digits than its factorization.

13872872406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533.

The product of its (nonzero) digits is 903168, while the sum is 48.

It can be divided in two parts, 13872872 and 406, that added together give a triangular number (13873278 = T5267).

The spelling of 13872872406 in words is "thirteen billion, eight hundred seventy-two million, eight hundred seventy-two thousand, four hundred six".

Divisors: 1 2 3 6 17 34 47 51 94 102 141 282 787 799 1574 1598 2361 2397 3677 4722 4794 7354 11031 13379 22062 26758 36989 40137 62509 73978 80274 110967 125018 172819 187527 221934 345638 375054 518457 628813 1036914 1257626 1886439 2893799 2937923 3772878 5787598 5875846 8681397 8813769 17362794 17627538 49194583 98389166 136008553 147583749 272017106 295167498 408025659 816051318 2312145401 4624290802 6936436203 13872872406