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284528142 = 23219138263
BaseRepresentation
bin10000111101011…
…000111000001110
3201211101112020100
4100331120320032
51040314400032
644122231530
710023310053
oct2075307016
9654345210
10284528142
11136677228
127b3555a6
1346c41762
1429b0702a
1519ea497c
hex10f58e0e

284528142 has 24 divisors (see below), whose sum is σ = 616874544. Its totient is φ = 94781664.

The previous prime is 284528141. The next prime is 284528161. The reversal of 284528142 is 241825482.

It is a junction number, because it is equal to n+sod(n) for n = 284528097 and 284528106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284528141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30303 + ... + 38565.

It is an arithmetic number, because the mean of its divisors is an integer number (25703106).

Almost surely, 2284528142 is an apocalyptic number.

284528142 is an abundant number, since it is smaller than the sum of its proper divisors (332346402).

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

284528142 is a wasteful number, since it uses less digits than its factorization.

284528142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184 (or 10181 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 284528142 is about 16867.9619990087. The cubic root of 284528142 is about 657.7210518046.

The spelling of 284528142 in words is "two hundred eighty-four million, five hundred twenty-eight thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 18 1913 3826 5739 8263 11478 16526 17217 24789 34434 49578 74367 148734 15807119 31614238 47421357 94842714 142264071 284528142