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285130375 = 53171091231
BaseRepresentation
bin10000111111101…
…011111010000111
3201212112010100021
4100333223322013
51040443133000
644143200011
710031365615
oct2077537207
9655463307
10285130375
11136a48742
127b5a6007
13470c28ca
1429c226b5
151a07311a
hex10febe87

285130375 has 32 divisors (see below), whose sum is σ = 380540160. Its totient is φ = 212544000.

The previous prime is 285130357. The next prime is 285130393. The reversal of 285130375 is 573031582.

It is an interprime number because it is at equal distance from previous prime (285130357) and next prime (285130393).

It is not a de Polignac number, because 285130375 - 29 = 285129863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285130375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231010 + ... + 232240.

It is an arithmetic number, because the mean of its divisors is an integer number (11891880).

Almost surely, 2285130375 is an apocalyptic number.

285130375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285130375 is a deficient number, since it is larger than the sum of its proper divisors (95409785).

285130375 is a wasteful number, since it uses less digits than its factorization.

285130375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 285130375 is about 16885.8039488797. The cubic root of 285130375 is about 658.1847694818.

The spelling of 285130375 in words is "two hundred eighty-five million, one hundred thirty thousand, three hundred seventy-five".

Divisors: 1 5 17 25 85 109 125 425 545 1231 1853 2125 2725 6155 9265 13625 20927 30775 46325 104635 134179 153875 231625 523175 670895 2281043 2615875 3354475 11405215 16772375 57026075 285130375