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28373755020 = 223513311173439
BaseRepresentation
bin11010011011001101…
…010010010010001100
32201020102020002122120
4122123031102102030
5431102140130040
621011300012540
72023061636562
oct323315222214
981212202576
1028373755020
1111040277116
1255ba391150
1328a24a0570
141532481a32
15b10e937d0
hex69b35248c

28373755020 has 96 divisors (see below), whose sum is σ = 88317788160. Its totient is φ = 6759002880.

The previous prime is 28373755009. The next prime is 28373755097. The reversal of 28373755020 is 2055737382.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562540 + ... + 610899.

It is an arithmetic number, because the mean of its divisors is an integer number (919976960).

Almost surely, 228373755020 is an apocalyptic number.

28373755020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28373755020 is an abundant number, since it is smaller than the sum of its proper divisors (59944033140).

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

28373755020 is a wasteful number, since it uses less digits than its factorization.

28373755020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173495 (or 1173493 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 28373755020 in words is "twenty-eight billion, three hundred seventy-three million, seven hundred fifty-five thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 31 39 52 60 62 65 78 93 124 130 155 156 186 195 260 310 372 390 403 465 620 780 806 930 1209 1612 1860 2015 2418 4030 4836 6045 8060 12090 24180 1173439 2346878 3520317 4693756 5867195 7040634 11734390 14081268 15254707 17601585 23468780 30509414 35203170 36376609 45764121 61018828 70406340 72753218 76273535 91528242 109129827 145506436 152547070 181883045 183056484 218259654 228820605 305094140 363766090 436519308 457641210 472895917 545649135 727532180 915282420 945791834 1091298270 1418687751 1891583668 2182596540 2364479585 2837375502 4728959170 5674751004 7093438755 9457918340 14186877510 28373755020