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541220 = 22527061
BaseRepresentation
bin10000100001000100100
31000111102012
42010020210
5114304340
615333352
74412621
oct2041044
91014365
10541220
1133a699
12221258
1315c464
14101348
15aa565
hex84224

541220 has 12 divisors (see below), whose sum is σ = 1136604. Its totient is φ = 216480.

The previous prime is 541217. The next prime is 541231. The reversal of 541220 is 22145.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 417316 = 352^2 + 646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 541195 and 541204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13511 + ... + 13550.

It is an arithmetic number, because the mean of its divisors is an integer number (94717).

2541220 is an apocalyptic number.

It is an amenable number.

541220 is an abundant number, since it is smaller than the sum of its proper divisors (595384).

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

541220 is a wasteful number, since it uses less digits than its factorization.

541220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27070 (or 27068 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 541220 is about 735.6765593656. The cubic root of 541220 is about 81.4938081035.

Adding to 541220 its reverse (22145), we get a palindrome (563365).

The spelling of 541220 in words is "five hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 27061 54122 108244 135305 270610 541220