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487449143 = 17231246673
BaseRepresentation
bin11101000011011…
…110001000110111
31020222012222111222
4131003132020313
51444241333033
6120211420555
715036151346
oct3503361067
91228188458
10487449143
11230174835
121172b475b
1379cac45c
1448a49b5d
152cbd9598
hex1d0de237

487449143 has 8 divisors (see below), whose sum is σ = 538563168. Its totient is φ = 438828544.

The previous prime is 487449133. The next prime is 487449167. The reversal of 487449143 is 341944784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 487449143 - 28 = 487448887 is a prime.

It is a super-2 number, since 2×4874491432 = 475213334022868898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 487449094 and 487449103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487449113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622946 + ... + 623727.

It is an arithmetic number, because the mean of its divisors is an integer number (67320396).

Almost surely, 2487449143 is an apocalyptic number.

487449143 is a deficient number, since it is larger than the sum of its proper divisors (51114025).

487449143 is a wasteful number, since it uses less digits than its factorization.

487449143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246713.

The product of its digits is 387072, while the sum is 44.

The square root of 487449143 is about 22078.2504515190. The cubic root of 487449143 is about 787.0030891534.

The spelling of 487449143 in words is "four hundred eighty-seven million, four hundred forty-nine thousand, one hundred forty-three".

Divisors: 1 17 23 391 1246673 21193441 28673479 487449143