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214415243 = 7437179127
BaseRepresentation
bin11001100011110…
…11011110001011
3112221110102102022
430301323132023
5414342241433
633135355055
75212333220
oct1461733613
9487412368
10214415243
11100039389
125b982a8b
1335563733
1420695947
1513c55698
hexcc7b78b

214415243 has 32 divisors (see below), whose sum is σ = 259522560. Its totient is φ = 173365920.

The previous prime is 214415231. The next prime is 214415261. The reversal of 214415243 is 342514412.

It is not a de Polignac number, because 214415243 - 210 = 214414219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214415213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1688246 + ... + 1688372.

It is an arithmetic number, because the mean of its divisors is an integer number (8110080).

Almost surely, 2214415243 is an apocalyptic number.

214415243 is a deficient number, since it is larger than the sum of its proper divisors (45107317).

214415243 is a wasteful number, since it uses less digits than its factorization.

214415243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its digits is 3840, while the sum is 26.

The square root of 214415243 is about 14642.9246737119. The cubic root of 214415243 is about 598.5290290955.

Adding to 214415243 its reverse (342514412), we get a palindrome (556929655).

The spelling of 214415243 in words is "two hundred fourteen million, four hundred fifteen thousand, two hundred forty-three".

Divisors: 1 7 43 71 79 127 301 497 553 889 3053 3397 5461 5609 9017 10033 21371 23779 38227 39263 63119 70231 241187 387731 431419 712343 1688309 2714117 3019933 4986401 30630749 214415243