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214444143 = 32317310529
BaseRepresentation
bin11001100100000…
…10100001101111
3112221111220001200
430302002201233
5414344203033
633140140543
75212513404
oct1462024157
9487456050
10214444143
11100059071
125b997753
1335573934
14206a22ab
1513c5e013
hexcc8286f

214444143 has 24 divisors (see below), whose sum is σ = 324155520. Its totient is φ = 136442880.

The previous prime is 214444133. The next prime is 214444163. The reversal of 214444143 is 341444412.

214444143 is a `hidden beast` number, since 214 + 4 + 441 + 4 + 3 = 666.

It is not a de Polignac number, because 214444143 - 26 = 214444079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214444123) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15103 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (13506480).

Almost surely, 2214444143 is an apocalyptic number.

214444143 is a deficient number, since it is larger than the sum of its proper divisors (109711377).

214444143 is a wasteful number, since it uses less digits than its factorization.

214444143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639 (or 10636 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 214444143 is about 14643.9114651790. The cubic root of 214444143 is about 598.5559188377. Note that the first 3 decimals are identical.

Adding to 214444143 its reverse (341444412), we get a palindrome (555888555).

The spelling of 214444143 in words is "two hundred fourteen million, four hundred forty-four thousand, one hundred forty-three".

Divisors: 1 3 9 31 73 93 219 279 657 2263 6789 10529 20367 31587 94761 326399 768617 979197 2305851 2937591 6917553 23827127 71481381 214444143