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271220 = 22571191
BaseRepresentation
bin1000010001101110100
3111210001012
41002031310
532134340
65451352
72206505
oct1021564
9453035
10271220
11175854
12110b58
13965b1
1470bac
1555565
hex42374

271220 has 24 divisors (see below), whose sum is σ = 580608. Its totient is φ = 106400.

The previous prime is 271217. The next prime is 271231. The reversal of 271220 is 22172.

Adding to 271220 its reverse (22172), we get a palindrome (293392).

It is a junction number, because it is equal to n+sod(n) for n = 271195 and 271204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2271220 is an apocalyptic number.

271220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271220 is an abundant number, since it is smaller than the sum of its proper divisors (309388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

271220 is a wasteful number, since it uses less digits than its factorization.

271220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 271220 is about 520.7878646820. The cubic root of 271220 is about 64.7302429746.

The spelling of 271220 in words is "two hundred seventy-one thousand, two hundred twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 71 142 191 284 355 382 710 764 955 1420 1910 3820 13561 27122 54244 67805 135610 271220