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28318001072560 = 2452141216176507
BaseRepresentation
bin1100111000001010011000…
…11001010000100110110000
310201021011201011222011120021
412130011030121100212300
512202430231233310220
6140121035440453224
75651623315403563
oct634051431204660
9121234634864507
1028318001072560
1190286623a1841
12321427531a214
1312a54b7221304
146dc8546684da
153419399c64aa
hex19c14c6509b0

28318001072560 has 80 divisors (see below), whose sum is σ = 65901446849952. Its totient is φ = 11316522700800.

The previous prime is 28318001072513. The next prime is 28318001072629. The reversal of 28318001072560 is 6527010081382.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370097827 + ... + 370174333.

Almost surely, 228318001072560 is an apocalyptic number.

28318001072560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28318001072560 is an abundant number, since it is smaller than the sum of its proper divisors (37583445777392).

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

28318001072560 is a wasteful number, since it uses less digits than its factorization.

28318001072560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80822 (or 80816 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 28318001072560 in words is "twenty-eight trillion, three hundred eighteen billion, one million, seventy-two thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2141 2161 4282 4322 8564 8644 10705 10805 17128 17288 21410 21610 34256 34576 42820 43220 76507 85640 86440 153014 171280 172880 306028 382535 612056 765070 1224112 1530140 3060280 4626701 6120560 9253402 18506804 23133505 37013608 46267010 74027216 92534020 163801487 165331627 185068040 327602974 330663254 370136080 655205948 661326508 819007435 826658135 1310411896 1322653016 1638014870 1653316270 2620823792 2645306032 3276029740 3306632540 6552059480 6613265080 13104118960 13226530160 353975013407 707950026814 1415900053628 1769875067035 2831800107256 3539750134070 5663600214512 7079500268140 14159000536280 28318001072560