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143315690 = 257447127
BaseRepresentation
bin10001000101011…
…01001011101010
3100222200012011112
420202231023222
5243142100230
622115430322
73360110000
oct1042551352
9328605145
10143315690
1173997221
123bbb53a2
13238cb5ab
1415068a70
15c8add95
hex88ad2ea

143315690 has 80 divisors (see below), whose sum is σ = 309768192. Its totient is φ = 47712672.

The previous prime is 143315687. The next prime is 143315699. The reversal of 143315690 is 96513341.

143315690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1433156902 = 41078774000352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143315699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1128407 + ... + 1128533.

Almost surely, 2143315690 is an apocalyptic number.

143315690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143315690 is an abundant number, since it is smaller than the sum of its proper divisors (166452502).

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

143315690 is an equidigital number, since it uses as much as digits as its factorization.

143315690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 143315690 is about 11971.4531281712. The cubic root of 143315690 is about 523.3166825901.

The spelling of 143315690 in words is "one hundred forty-three million, three hundred fifteen thousand, six hundred ninety".

Divisors: 1 2 5 7 10 14 35 47 49 70 94 98 127 235 245 254 329 343 470 490 635 658 686 889 1270 1645 1715 1778 2303 2401 3290 3430 4445 4606 4802 5969 6223 8890 11515 11938 12005 12446 16121 23030 24010 29845 31115 32242 41783 43561 59690 62230 80605 83566 87122 112847 161210 208915 217805 225694 292481 304927 417830 435610 564235 584962 609854 1128470 1462405 1524635 2047367 2924810 3049270 4094734 10236835 14331569 20473670 28663138 71657845 143315690