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1220214 = 23474327
BaseRepresentation
bin100101001111001110110
32021222211010
410221321312
5303021324
642053050
713241322
oct4517166
92258733
101220214
11763846
124aa186
13339528
1423a982
15191829
hex129e76

1220214 has 16 divisors (see below), whose sum is σ = 2492928. Its totient is φ = 397992.

The previous prime is 1220203. The next prime is 1220239. The reversal of 1220214 is 4120221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220214.

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, 1882 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (155808).

21220214 is an apocalyptic number.

1220214 is an abundant number, since it is smaller than the sum of its proper divisors (1272714).

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

1220214 is a wasteful number, since it uses less digits than its factorization.

1220214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220214 is about 1104.6329707192. The cubic root of 1220214 is about 106.8592203371.

Adding to 1220214 its reverse (4120221), we get a palindrome (5340435).

The spelling of 1220214 in words is "one million, two hundred twenty thousand, two hundred fourteen".

Divisors: 1 2 3 6 47 94 141 282 4327 8654 12981 25962 203369 406738 610107 1220214