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284180 = 225131093
BaseRepresentation
bin1000101011000010100
3112102211012
41011120110
533043210
610031352
72262341
oct1053024
9472735
10284180
11184566
12118558
139c470
14757c8
1559305
hex45614

284180 has 24 divisors (see below), whose sum is σ = 643272. Its totient is φ = 104832.

The previous prime is 284173. The next prime is 284191. The reversal of 284180 is 81482.

It can be written as a sum of positive squares in 4 ways, for example, as 55696 + 228484 = 236^2 + 478^2 .

It is a congruent number.

It is an unprimeable number.

284180 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287 + ... + 806.

It is an arithmetic number, because the mean of its divisors is an integer number (26803).

2284180 is an apocalyptic number.

284180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284180 is an abundant number, since it is smaller than the sum of its proper divisors (359092).

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

284180 is a wasteful number, since it uses less digits than its factorization.

284180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 284180 is about 533.0853590186. The cubic root of 284180 is about 65.7452684938.

It can be divided in two parts, 284 and 180, that added together give a palindrome (464).

The spelling of 284180 in words is "two hundred eighty-four thousand, one hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1093 2186 4372 5465 10930 14209 21860 28418 56836 71045 142090 284180