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272281 = 2941229
BaseRepresentation
bin1000010011110011001
3111211111111
41002132121
532203111
65500321
72212552
oct1023631
9454444
10272281
11176629
121116a1
1396c19
1471329
1555a21
hex42799

272281 has 8 divisors (see below), whose sum is σ = 289800. Its totient is φ = 255360.

The previous prime is 272269. The next prime is 272287. The reversal of 272281 is 182272.

It can be written as a sum of positive squares in 4 ways, for example, as 38025 + 234256 = 195^2 + 484^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 272281 - 25 = 272249 is a prime.

It is a super-2 number, since 2×2722812 = 148273885922, 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 (272287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (36225).

2272281 is an apocalyptic number.

It is an amenable number.

272281 is a deficient number, since it is larger than the sum of its proper divisors (17519).

272281 is a wasteful number, since it uses less digits than its factorization.

272281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its digits is 448, while the sum is 22.

The square root of 272281 is about 521.8055193269. The cubic root of 272281 is about 64.8145403788.

Subtracting from 272281 its reverse (182272), we obtain a palindrome (90009).

The spelling of 272281 in words is "two hundred seventy-two thousand, two hundred eighty-one".

Divisors: 1 29 41 229 1189 6641 9389 272281