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214204220 = 225591671087
BaseRepresentation
bin11001100010001…
…11111100111100
3112221001200221122
430301013330330
5414314013340
633131050112
75210464046
oct1461077474
9487050848
10214204220
11aaa0488a
125b8a0938
13354bb679
142063ca96
1513c12db5
hexcc47f3c

214204220 has 48 divisors (see below), whose sum is σ = 460615680. Its totient is φ = 83648064.

The previous prime is 214204201. The next prime is 214204223. The reversal of 214204220 is 22402412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214204223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196517 + ... + 197603.

It is an arithmetic number, because the mean of its divisors is an integer number (9596160).

Almost surely, 2214204220 is an apocalyptic number.

214204220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214204220 is an abundant number, since it is smaller than the sum of its proper divisors (246411460).

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

214204220 is a wasteful number, since it uses less digits than its factorization.

214204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 214204220 is about 14635.7172697480. The cubic root of 214204220 is about 598.3326113917.

Adding to 214204220 its reverse (22402412), we get a palindrome (236606632).

The spelling of 214204220 in words is "two hundred fourteen million, two hundred four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 59 118 167 236 295 334 590 668 835 1087 1180 1670 2174 3340 4348 5435 9853 10870 19706 21740 39412 49265 64133 98530 128266 181529 197060 256532 320665 363058 641330 726116 907645 1282660 1815290 3630580 10710211 21420422 42840844 53551055 107102110 214204220