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214639212 = 223171815813
BaseRepresentation
bin11001100101100…
…10001001101100
3112221212210122110
430302302021230
5414421423322
633144244020
75214255204
oct1462621154
9487783573
10214639212
11100181687
125ba70610
1335611668
1420713404
1513c9bc0c
hexccb226c

214639212 has 48 divisors (see below), whose sum is σ = 533306592. Its totient is φ = 66954240.

The previous prime is 214639207. The next prime is 214639231. The reversal of 214639212 is 212936412.

It is a self number, because there is not a number n which added to its sum of digits gives 214639212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34018 + ... + 39830.

It is an arithmetic number, because the mean of its divisors is an integer number (11110554).

Almost surely, 2214639212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214639212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266653296).

214639212 is an abundant number, since it is smaller than the sum of its proper divisors (318667380).

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

214639212 is a wasteful number, since it uses less digits than its factorization.

214639212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018 (or 6016 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 214639212 is about 14650.5703643237. The cubic root of 214639212 is about 598.7373558579.

The spelling of 214639212 in words is "two hundred fourteen million, six hundred thirty-nine thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 181 204 362 543 724 1086 2172 3077 5813 6154 9231 11626 12308 17439 18462 23252 34878 36924 69756 98821 197642 296463 395284 592926 1052153 1185852 2104306 3156459 4208612 6312918 12625836 17886601 35773202 53659803 71546404 107319606 214639212