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487897101 = 364011669
BaseRepresentation
bin11101000101001…
…011100000001101
31021000001202000000
4131011023200031
51444400201401
6120225154513
715043025346
oct3505134015
91230052000
10487897101
1123045034a
1211748ba39
137a108313
1448b250cd
152cc77186
hex1d14b80d

487897101 has 28 divisors (see below), whose sum is σ = 733774620. Its totient is φ = 324259200.

The previous prime is 487897079. The next prime is 487897103. The reversal of 487897101 is 101798784.

It can be written as a sum of positive squares in 2 ways, for example, as 404613225 + 83283876 = 20115^2 + 9126^2 .

It is not a de Polignac number, because 487897101 - 27 = 487896973 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487897103) 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 27 ways as a sum of consecutive naturals, for example, 291495 + ... + 293163.

Almost surely, 2487897101 is an apocalyptic number.

It is an amenable number.

487897101 is a deficient number, since it is larger than the sum of its proper divisors (245877519).

487897101 is an equidigital number, since it uses as much as digits as its factorization.

487897101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 487897101 is about 22088.3929021556. The cubic root of 487897101 is about 787.2440964432.

The spelling of 487897101 in words is "four hundred eighty-seven million, eight hundred ninety-seven thousand, one hundred one".

Divisors: 1 3 9 27 81 243 401 729 1203 1669 3609 5007 10827 15021 32481 45063 97443 135189 292329 405567 669269 1216701 2007807 6023421 18070263 54210789 162632367 487897101