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87104043 = 32132293251
BaseRepresentation
bin1010011000100…
…01101000101011
320001220100021200
411030101220223
5134244312133
612350535243
72105241435
oct514215053
9201810250
1087104043
1145193614
1225207523
1315079a70
14b7d5655
1579a8913
hex5311a2b

87104043 has 24 divisors (see below), whose sum is σ = 136128720. Its totient is φ = 53352000.

The previous prime is 87104009. The next prime is 87104047. The reversal of 87104043 is 34040178.

It is not a de Polignac number, because 87104043 - 26 = 87103979 is a prime.

It is a super-2 number, since 2×871040432 = 15174228613891698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87103998 and 87104016.

It is not an unprimeable number, because it can be changed into a prime (87104047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25168 + ... + 28418.

It is an arithmetic number, because the mean of its divisors is an integer number (5672030).

Almost surely, 287104043 is an apocalyptic number.

87104043 is a deficient number, since it is larger than the sum of its proper divisors (49024677).

87104043 is a wasteful number, since it uses less digits than its factorization.

87104043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 87104043 is about 9332.9546768427. The cubic root of 87104043 is about 443.2813276224.

The spelling of 87104043 in words is "eighty-seven million, one hundred four thousand, forty-three".

Divisors: 1 3 9 13 39 117 229 687 2061 2977 3251 8931 9753 26793 29259 42263 126789 380367 744479 2233437 6700311 9678227 29034681 87104043