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272831 = 1331677
BaseRepresentation
bin1000010100110111111
3111212020212
41002212333
532212311
65503035
72214266
oct1024677
9455225
10272831
11176a89
12111a7b
1397250
14715dd
1555c8b
hex429bf

272831 has 8 divisors (see below), whose sum is σ = 303744. Its totient is φ = 243360.

The previous prime is 272813. The next prime is 272863. The reversal of 272831 is 138272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 272831 - 210 = 271807 is a prime.

It is a super-2 number, since 2×2728312 = 148873509122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 272797 and 272806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (37968).

2272831 is an apocalyptic number.

272831 is a deficient number, since it is larger than the sum of its proper divisors (30913).

272831 is a wasteful number, since it uses less digits than its factorization.

272831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its digits is 672, while the sum is 23.

The square root of 272831 is about 522.3322697288. The cubic root of 272831 is about 64.8581522129.

The spelling of 272831 in words is "two hundred seventy-two thousand, eight hundred thirty-one".

Divisors: 1 13 31 403 677 8801 20987 272831