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2086231 = 72943239
BaseRepresentation
bin111111101010101010111
310220222202211
413331111113
51013224411
6112414251
723506210
oct7752527
93828684
102086231
1111a5464
12847387
13580774
143c4407
152b3221
hex1fd557

2086231 has 16 divisors (see below), whose sum is σ = 2534400. Its totient is φ = 1679328.

The previous prime is 2086213. The next prime is 2086243. The reversal of 2086231 is 1326802.

It is not a de Polignac number, because 2086231 - 25 = 2086199 is a prime.

It is a super-2 number, since 2×20862312 = 8704719570722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8610 + ... + 8848.

It is an arithmetic number, because the mean of its divisors is an integer number (158400).

22086231 is an apocalyptic number.

2086231 is a deficient number, since it is larger than the sum of its proper divisors (448169).

2086231 is a wasteful number, since it uses less digits than its factorization.

2086231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2086231 is about 1444.3791053598. The cubic root of 2086231 is about 127.7774248818. Note that the first 3 decimals are identical.

The spelling of 2086231 in words is "two million, eighty-six thousand, two hundred thirty-one".

Divisors: 1 7 29 43 203 239 301 1247 1673 6931 8729 10277 48517 71939 298033 2086231