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87354020 = 225131917683
BaseRepresentation
bin1010011010011…
…10101010100100
320002101001012002
411031032222210
5134330312040
612400144432
72110332305
oct515165244
9202331162
1087354020
1145344406
1225308118
1315136790
14b85c7ac
157a07a15
hex534eaa4

87354020 has 48 divisors (see below), whose sum is σ = 207963840. Its totient is φ = 30554496.

The previous prime is 87354011. The next prime is 87354031. The reversal of 87354020 is 2045378.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3902 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (4332580).

Almost surely, 287354020 is an apocalyptic number.

It is an amenable number.

87354020 is an abundant number, since it is smaller than the sum of its proper divisors (120609820).

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

87354020 is a wasteful number, since it uses less digits than its factorization.

87354020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17724 (or 17722 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 87354020 is about 9346.3372504955. The cubic root of 87354020 is about 443.7049753961.

Adding to 87354020 its reverse (2045378), we get a palindrome (89399398).

The spelling of 87354020 in words is "eighty-seven million, three hundred fifty-four thousand, twenty".

Divisors: 1 2 4 5 10 13 19 20 26 38 52 65 76 95 130 190 247 260 380 494 988 1235 2470 4940 17683 35366 70732 88415 176830 229879 335977 353660 459758 671954 919516 1149395 1343908 1679885 2298790 3359770 4367701 4597580 6719540 8735402 17470804 21838505 43677010 87354020