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28248115740 = 223513311168243
BaseRepresentation
bin11010010011101110…
…000000101000011100
32200220122210221221220
4122103232000220130
5430323004200430
620551011053340
72020005010365
oct322356005034
980818727856
1028248115740
1110a863634a9
1255842a1250
1328824508b0
14151d8d8b6c
15b04e27110
hex693b80a1c

28248115740 has 96 divisors (see below), whose sum is σ = 87926716416. Its totient is φ = 6729073920.

The previous prime is 28248115729. The next prime is 28248115741. The reversal of 28248115740 is 4751184282.

It is a junction number, because it is equal to n+sod(n) for n = 28248115692 and 28248115701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248115741) 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, 559942 + ... + 608301.

It is an arithmetic number, because the mean of its divisors is an integer number (915903296).

Almost surely, 228248115740 is an apocalyptic number.

28248115740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28248115740 is an abundant number, since it is smaller than the sum of its proper divisors (59678600676).

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

28248115740 is a wasteful number, since it uses less digits than its factorization.

28248115740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168299 (or 1168297 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 28248115740 in words is "twenty-eight billion, two hundred forty-eight million, one hundred fifteen thousand, seven hundred forty".

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 1168243 2336486 3504729 4672972 5841215 7009458 11682430 14018916 15187159 17523645 23364860 30374318 35047290 36215533 45561477 60748636 70094580 72431066 75935795 91122954 108646599 144862132 151871590 181077665 182245908 217293198 227807385 303743180 362155330 434586396 455614770 470801929 543232995 724310660 911229540 941603858 1086465990 1412405787 1883207716 2172931980 2354009645 2824811574 4708019290 5649623148 7062028935 9416038580 14124057870 28248115740