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28682905108 = 22111326316113
BaseRepresentation
bin11010101101101000…
…100110011000010100
32202000221221112211211
4122231220212120110
5432220310430413
621102102111204
72033534446024
oct325550463024
982027845754
1028682905108
1111189830160
125685a1b504
132921553100
141561557a84
15b2d1ad83d
hex6ada26614

28682905108 has 72 divisors (see below), whose sum is σ = 59398145856. Its totient is φ = 12013747200.

The previous prime is 28682905073. The next prime is 28682905187. The reversal of 28682905108 is 80150928682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4689060 + ... + 4695172.

It is an arithmetic number, because the mean of its divisors is an integer number (824974248).

Almost surely, 228682905108 is an apocalyptic number.

It is an amenable number.

28682905108 is an abundant number, since it is smaller than the sum of its proper divisors (30715240748).

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

28682905108 is a wasteful number, since it uses less digits than its factorization.

28682905108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 28682905108 in words is "twenty-eight billion, six hundred eighty-two million, nine hundred five thousand, one hundred eight".

Divisors: 1 2 4 11 13 22 26 44 52 143 169 286 338 572 631 676 1262 1859 2524 3718 6113 6941 7436 8203 12226 13882 16406 24452 27764 32812 67243 79469 90233 106639 134486 158938 180466 213278 268972 317876 360932 426556 874159 1033097 1173029 1748318 2066194 2346058 3496636 3857303 4132388 4692116 7714606 11364067 15429212 22728134 42430333 45456268 50144939 84860666 100289878 169721332 200579756 551594329 651884207 1103188658 1303768414 2206377316 2607536828 7170726277 14341452554 28682905108