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830136285 = 32511432907
BaseRepresentation
bin110001011110101…
…101111111011101
32010212001021220100
4301132231333131
53200003330120
6214212411313
726400020256
oct6136557735
92125037810
10830136285
11396654750
121b2016b39
13102ca4c04
147c371b2d
154cd2b490
hex317adfdd

830136285 has 72 divisors (see below), whose sum is σ = 1608837984. Its totient is φ = 392696640.

The previous prime is 830136283. The next prime is 830136287. The reversal of 830136285 is 582631038.

It is an interprime number because it is at equal distance from previous prime (830136283) and next prime (830136287).

It is not a de Polignac number, because 830136285 - 21 = 830136283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830136283) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 914802 + ... + 915708.

It is an arithmetic number, because the mean of its divisors is an integer number (22344972).

Almost surely, 2830136285 is an apocalyptic number.

It is an amenable number.

830136285 is a deficient number, since it is larger than the sum of its proper divisors (778701699).

830136285 is a wasteful number, since it uses less digits than its factorization.

830136285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 830136285 is about 28812.0857453951. The cubic root of 830136285 is about 939.8310715750.

It can be divided in two parts, 83013 and 6285, that added together give a palindrome (89298).

The spelling of 830136285 in words is "eight hundred thirty million, one hundred thirty-six thousand, two hundred eighty-five".

Divisors: 1 3 5 9 11 15 33 43 45 55 99 129 165 215 387 473 495 645 907 1419 1849 1935 2365 2721 4257 4535 5547 7095 8163 9245 9977 13605 16641 20339 21285 27735 29931 39001 40815 49885 61017 83205 89793 101695 117003 149655 183051 195005 305085 351009 429011 448965 585015 915255 1287033 1677043 1755045 2145055 3861099 5031129 6435165 8385215 15093387 18447473 19305495 25155645 55342419 75466935 92237365 166027257 276712095 830136285