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38401582211872 = 25112193116838309
BaseRepresentation
bin10001011101101000100001…
…01010101010001100100000
312000222011012021212012222221
420232310100222222030200
520013132420021234442
6213401235431440424
711042265002032165
oct1056642052521440
9160864167765887
1038401582211872
1111266024038900
124382598226114
13185733b3b9a89
1496a909db206c
15468da74c1467
hex22ed10aaa320

38401582211872 has 144 divisors (see below), whose sum is σ = 90296447673600. Its totient is φ = 16003127923200.

The previous prime is 38401582211869. The next prime is 38401582211879. The reversal of 38401582211872 is 27811228510483.

It is not an unprimeable number, because it can be changed into a prime (38401582211879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6138547 + ... + 10699762.

It is an arithmetic number, because the mean of its divisors is an integer number (627058664400).

Almost surely, 238401582211872 is an apocalyptic number.

38401582211872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38401582211872 is an abundant number, since it is smaller than the sum of its proper divisors (51894865461728).

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

38401582211872 is a wasteful number, since it uses less digits than its factorization.

38401582211872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16838391 (or 16838372 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 38401582211872 in words is "thirty-eight trillion, four hundred one billion, five hundred eighty-two million, two hundred eleven thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 11 16 19 22 31 32 38 44 62 76 88 121 124 152 176 209 242 248 304 341 352 418 484 496 589 608 682 836 968 992 1178 1364 1672 1936 2299 2356 2728 3344 3751 3872 4598 4712 5456 6479 6688 7502 9196 9424 10912 12958 15004 18392 18848 25916 30008 36784 51832 60016 71269 73568 103664 120032 142538 207328 285076 570152 1140304 2280608 16838309 33676618 67353236 134706472 185221399 269412944 319927871 370442798 521987579 538825888 639855742 740885596 1043975158 1279711484 1481771192 2037435389 2087950316 2559422968 2963542384 3519206581 4074870778 4175900632 5118845936 5741863369 5927084768 7038413162 8149741556 8351801264 9917764001 10237691872 11483726738 14076826324 16299483112 16703602528 19835528002 22967453476 28153652648 32598966224 38711272391 39671056004 45934906952 56307305296 63160497059 65197932448 77422544782 79342112008 91869813904 109095404011 112614610592 126320994118 154845089564 158684224016 183739627808 218190808022 252641988236 309690179128 317368448032 436381616044 505283976472 619380358256 872763232088 1010567952944 1200049444121 1238760716512 1745526464176 2021135905888 2400098888242 3491052928352 4800197776484 9600395552968 19200791105936 38401582211872