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13214555872 = 257173470209
BaseRepresentation
bin11000100111010011…
…00001111011100000
31021002221111222210021
430103221201323200
5204030411241442
610023133443224
7645316604650
oct142351417340
937087458707
1013214555872
1156712aa461
122689640514
13132798443b
148d505a360
155251d3e67
hex313a61ee0

13214555872 has 48 divisors (see below), whose sum is σ = 31481745120. Its totient is φ = 5330239488.

The previous prime is 13214555869. The next prime is 13214555873. The reversal of 13214555872 is 27855541231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13214555873) 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, 1731297 + ... + 1738912.

It is an arithmetic number, because the mean of its divisors is an integer number (655869690).

Almost surely, 213214555872 is an apocalyptic number.

It is an amenable number.

13214555872 is an abundant number, since it is smaller than the sum of its proper divisors (18267189248).

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

13214555872 is a wasteful number, since it uses less digits than its factorization.

13214555872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470243 (or 3470235 counting only the distinct ones).

The product of its digits is 336000, while the sum is 43.

The spelling of 13214555872 in words is "thirteen billion, two hundred fourteen million, five hundred fifty-five thousand, eight hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 17 28 32 34 56 68 112 119 136 224 238 272 476 544 952 1904 3808 3470209 6940418 13880836 24291463 27761672 48582926 55523344 58993553 97165852 111046688 117987106 194331704 235974212 388663408 412954871 471948424 777326816 825909742 943896848 1651819484 1887793696 3303638968 6607277936 13214555872