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87230134004 = 22134197421801
BaseRepresentation
bin101000100111101010…
…0100011011011110100
322100011012212221021212
41101033110203123310
52412121403242004
6104023432300552
76205433622326
oct1211724433364
9270135787255
1087230134004
1133aa3155842
1214aa5241758
1382c2016010
1443170bd616
1524080e596e
hex144f5236f4

87230134004 has 48 divisors (see below), whose sum is σ = 170141429136. Its totient is φ = 38873088000.

The previous prime is 87230134003. The next prime is 87230134037. The reversal of 87230134004 is 40043103278.

It can be written as a sum of positive squares in 8 ways, for example, as 4435826404 + 82794307600 = 66602^2 + 287740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87230134003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4097 + ... + 417704.

It is an arithmetic number, because the mean of its divisors is an integer number (3544613107).

Almost surely, 287230134004 is an apocalyptic number.

It is an amenable number.

87230134004 is a deficient number, since it is larger than the sum of its proper divisors (82911295132).

87230134004 is a wasteful number, since it uses less digits than its factorization.

87230134004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421956 (or 421954 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 87230134004 in words is "eighty-seven billion, two hundred thirty million, one hundred thirty-four thousand, four".

Divisors: 1 2 4 13 26 41 52 82 97 164 194 388 533 1066 1261 2132 2522 3977 5044 7954 15908 51701 103402 206804 421801 843602 1687204 5483413 10966826 17293841 21933652 34587682 40914697 69175364 81829394 163658788 224819933 449639866 531891061 899279732 1063782122 1677502577 2127564244 3355005154 6710010308 21807533501 43615067002 87230134004