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507985143 = 3179960493
BaseRepresentation
bin11110010001110…
…011110011110111
31022101212022121120
4132101303303313
52020021011033
6122223515023
715405542151
oct3621636367
91271768546
10507985143
11240820836
12122158a73
138131c833
144b673ad1
152e8e41b3
hex1e473cf7

507985143 has 8 divisors (see below), whose sum is σ = 717155568. Its totient is φ = 318735744.

The previous prime is 507985133. The next prime is 507985147. The reversal of 507985143 is 341589705.

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

It is not a de Polignac number, because 507985143 - 210 = 507984119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 507985095 and 507985104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507985147) 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 7 ways as a sum of consecutive naturals, for example, 4980196 + ... + 4980297.

It is an arithmetic number, because the mean of its divisors is an integer number (89644446).

Almost surely, 2507985143 is an apocalyptic number.

507985143 is a deficient number, since it is larger than the sum of its proper divisors (209170425).

507985143 is a wasteful number, since it uses less digits than its factorization.

507985143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9960513.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 507985143 is about 22538.5257503680. The cubic root of 507985143 is about 797.9034389855.

The spelling of 507985143 in words is "five hundred seven million, nine hundred eighty-five thousand, one hundred forty-three".

Divisors: 1 3 17 51 9960493 29881479 169328381 507985143