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8870243428550 = 252731181490523
BaseRepresentation
bin1000000100010100001110…
…1101010110100011000110
31011101222122111221000220202
42001011003231112203012
52130312224304203200
630510533352530502
71603565621053160
oct201050355264306
934358574830822
108870243428550
11290a938194519
12bb31426b0a32
134c45ca56972a
14229471aa5930
15105b06e001d5
hex81143b568c6

8870243428550 has 48 divisors (see below), whose sum is σ = 18916232355072. Its totient is φ = 3031447418400.

The previous prime is 8870243428511. The next prime is 8870243428591. The reversal of 8870243428550 is 558243420788.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 40636412 + ... + 40854111.

It is an arithmetic number, because the mean of its divisors is an integer number (394088174064).

Almost surely, 28870243428550 is an apocalyptic number.

8870243428550 is an abundant number, since it is smaller than the sum of its proper divisors (10045988926522).

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

8870243428550 is a wasteful number, since it uses less digits than its factorization.

8870243428550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81490853 (or 81490848 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 56.

The spelling of 8870243428550 in words is "eight trillion, eight hundred seventy billion, two hundred forty-three million, four hundred twenty-eight thousand, five hundred fifty".

Divisors: 1 2 5 7 10 14 25 35 50 70 175 311 350 622 1555 2177 3110 4354 7775 10885 15550 21770 54425 108850 81490523 162981046 407452615 570433661 814905230 1140867322 2037263075 2852168305 4074526150 5704336610 14260841525 25343552653 28521683050 50687105306 126717763265 177404868571 253435526530 354809737142 633588816325 887024342855 1267177632650 1774048685710 4435121714275 8870243428550