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271220293 = 1693160201
BaseRepresentation
bin10000001010100…
…111111001000101
3200220100102022001
4100022213321011
51023413022133
642525105301
76502222501
oct2012477105
9626312261
10271220293
1112a107903
12769b8231
13442623a6
1428041301
1518c2687d
hex102a7e45

271220293 has 4 divisors (see below), whose sum is σ = 271382188. Its totient is φ = 271058400.

The previous prime is 271220273. The next prime is 271220317. The reversal of 271220293 is 392022172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60186564 + 211033729 = 7758^2 + 14527^2 .

It is a cyclic number.

It is not a de Polignac number, because 271220293 - 225 = 237665861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78408 + ... + 81793.

It is an arithmetic number, because the mean of its divisors is an integer number (67845547).

Almost surely, 2271220293 is an apocalyptic number.

It is an amenable number.

271220293 is a deficient number, since it is larger than the sum of its proper divisors (161895).

271220293 is a wasteful number, since it uses less digits than its factorization.

271220293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161894.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 271220293 is about 16468.7671973345. The cubic root of 271220293 is about 647.3026628408.

It can be divided in two parts, 2712 and 20293, that added together give a triangular number (23005 = T214).

The spelling of 271220293 in words is "two hundred seventy-one million, two hundred twenty thousand, two hundred ninety-three".

Divisors: 1 1693 160201 271220293