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28406127248688 = 2437154966738179
BaseRepresentation
bin1100111010101110100010…
…00111111100010100110000
310201120121011211220202120110
412131113101013330110300
512210401222033424223
6140225332242341320
75661163212502020
oct635272107742460
9121517154822513
1028406127248688
119061a75316262
12322936a65a840
1312b08bca76367
14702c14753a80
15343d965b5d93
hex19d5d11fc530

28406127248688 has 160 divisors (see below), whose sum is σ = 83942688832000. Its totient is φ = 8108589846528.

The previous prime is 28406127248687. The next prime is 28406127248729. The reversal of 28406127248688 is 88684272160482.

It is not an unprimeable number, because it can be changed into a prime (28406127248683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3473052183 + ... + 3473060361.

It is an arithmetic number, because the mean of its divisors is an integer number (524641805200).

Almost surely, 228406127248688 is an apocalyptic number.

28406127248688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28406127248688 is an abundant number, since it is smaller than the sum of its proper divisors (55536561583312).

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

28406127248688 is a wasteful number, since it uses less digits than its factorization.

28406127248688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16419 (or 16413 counting only the distinct ones).

The product of its (nonzero) digits is 132120576, while the sum is 66.

The spelling of 28406127248688 in words is "twenty-eight trillion, four hundred six billion, one hundred twenty-seven million, two hundred forty-eight thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 1549 3098 4647 6196 6673 8179 9294 10843 12392 13346 16358 18588 20019 21686 24537 24784 26692 32529 32716 37176 40038 43372 46711 49074 53384 57253 65058 65432 74352 80076 86744 93422 98148 106768 114506 130116 130864 140133 160152 171759 173488 186844 196296 229012 260232 280266 320304 343518 373688 392592 458024 520464 560532 687036 747376 916048 1121064 1374072 2242128 2748144 10336477 12669271 20672954 25338542 31009431 38007813 41345908 50677084 54578467 62018862 72355339 76015626 82691816 88684897 101354168 109156934 124037724 144710678 152031252 163735401 165383632 177369794 202708336 217066017 218313868 248075448 266054691 289421356 304062504 327470802 354739588 382049269 434132034 436627736 496150896 532109382 578842712 608125008 654941604 709479176 764098538 868264068 873255472 1064218764 1146147807 1157685424 1309883208 1418958352 1528197076 1736528136 2128437528 2292295614 2619766416 3056394152 3473056272 4256875056 4584591228 6112788304 9169182456 18338364912 84542045383 169084090766 253626136149 338168181532 507252272298 591794317681 676336363064 1014504544596 1183588635362 1352672726128 1775382953043 2029009089192 2367177270724 3550765906086 4058018178384 4734354541448 7101531812172 9468709082896 14203063624344 28406127248688