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87145352 = 2378318749
BaseRepresentation
bin1010011000110…
…11101110001000
320001222102221122
411030123232020
5134302122402
612351454412
72105503040
oct514335610
9201872848
1087145352
1145211658
1225227408
13150927c8
14b806720
1579b5ca2
hex531bb88

87145352 has 32 divisors (see below), whose sum is σ = 189000000. Its totient is φ = 36896064.

The previous prime is 87145339. The next prime is 87145363. The reversal of 87145352 is 25354178.

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 7 ways as a sum of consecutive naturals, for example, 4727 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (5906250).

Almost surely, 287145352 is an apocalyptic number.

It is an amenable number.

87145352 is an abundant number, since it is smaller than the sum of its proper divisors (101854648).

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

87145352 is a wasteful number, since it uses less digits than its factorization.

87145352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18845 (or 18841 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 87145352 is about 9335.1674864461. The cubic root of 87145352 is about 443.3513917808.

The spelling of 87145352 in words is "eighty-seven million, one hundred forty-five thousand, three hundred fifty-two".

Divisors: 1 2 4 7 8 14 28 56 83 166 332 581 664 1162 2324 4648 18749 37498 74996 131243 149992 262486 524972 1049944 1556167 3112334 6224668 10893169 12449336 21786338 43572676 87145352