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28806153460580 = 22547373547150197
BaseRepresentation
bin1101000110010111101001…
…00010110101101101100100
310202222211201100210211112002
412203023310202311231210
512233430000241214310
6141133210400344432
76032114223263366
oct643136442655544
9122884640724462
1028806153460580
1191a6691720a81
1232929aa615118
13130c5409613a2
147183221bad36
1534e4aa43ada5
hex1a32f48b5b64

28806153460580 has 96 divisors (see below), whose sum is σ = 62059295079936. Its totient is φ = 11226432462336.

The previous prime is 28806153460543. The next prime is 28806153460619. The reversal of 28806153460580 is 8506435160882.

It is a super-2 number, since 2×288061534605802 (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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, 191714042 + ... + 191864238.

It is an arithmetic number, because the mean of its divisors is an integer number (646450990416).

Almost surely, 228806153460580 is an apocalyptic number.

28806153460580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28806153460580 is an abundant number, since it is smaller than the sum of its proper divisors (33253141619356).

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

28806153460580 is a wasteful number, since it uses less digits than its factorization.

28806153460580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151173 (or 151171 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 28806153460580 in words is "twenty-eight trillion, eight hundred six billion, one hundred fifty-three million, four hundred sixty thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 47 94 188 235 373 470 547 746 940 1094 1492 1865 2188 2735 3730 5470 7460 10940 17531 25709 35062 51418 70124 87655 102836 128545 150197 175310 204031 257090 300394 350620 408062 514180 600788 750985 816124 1020155 1501970 2040310 3003940 4080620 7059259 9589457 14118518 19178914 28237036 35296295 38357828 47947285 56023481 70592590 82157759 95894570 112046962 141185180 164315518 191789140 224093924 280117405 328631036 410788795 560234810 821577590 1120469620 1643155180 2633103607 3861414673 5266207214 7722829346 10532414428 13165518035 15445658692 19307073365 26331036070 30644844107 38614146730 52662072140 61289688214 77228293460 122579376428 153224220535 306448441070 612896882140 1440307673029 2880615346058 5761230692116 7201538365145 14403076730290 28806153460580