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28853412640108 = 22729421757111497
BaseRepresentation
bin1101000111101111101010…
…11010010011010101101100
310210011100200221021220021121
412203313311122103111230
512240213242113440413
6141211024052510324
76035406314550040
oct643676532232554
9123140627256247
1028853412640108
119214733257041
12329bb9961b3a4
131313b32924544
1471a7268d0020
15350824385b8d
hex1a3df569356c

28853412640108 has 96 divisors (see below), whose sum is σ = 59918097536640. Its totient is φ = 11895142533120.

The previous prime is 28853412640103. The next prime is 28853412640123. The reversal of 28853412640108 is 80104621435882.

It is not an unprimeable number, because it can be changed into a prime (28853412640103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258726216 + ... + 258837712.

It is an arithmetic number, because the mean of its divisors is an integer number (624146849340).

Almost surely, 228853412640108 is an apocalyptic number.

28853412640108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28853412640108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29959048768320).

28853412640108 is an abundant number, since it is smaller than the sum of its proper divisors (31064684896532).

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

28853412640108 is a wasteful number, since it uses less digits than its factorization.

28853412640108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112715 (or 112713 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 28853412640108 in words is "twenty-eight trillion, eight hundred fifty-three billion, four hundred twelve million, six hundred forty thousand, one hundred eight".

Divisors: 1 2 4 7 14 28 29 58 116 203 406 421 757 812 842 1514 1684 2947 3028 5299 5894 10598 11788 12209 21196 21953 24418 43906 48836 85463 87812 111497 153671 170926 222994 307342 318697 341852 445988 614684 637394 780479 1274788 1560958 2230879 3121916 3233413 4461758 6466826 8923516 9242213 12933652 18484426 22633891 36968852 45267782 46940237 64695491 84403229 90535564 93880474 129390982 168806458 187760948 258781964 328581659 337612916 590822603 657163318 1181645206 1314326636 1361266873 2363290412 2447693641 2722533746 4895387282 5445067492 9528868111 9790774564 17133855487 19057736222 34267710974 35533759409 38115472444 68535421948 71067518818 142135037636 248736315863 497472631726 994945263452 1030479022861 2060958045722 4121916091444 7213353160027 14426706320054 28853412640108