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214244143 = 906723629
BaseRepresentation
bin11001100010100…
…01101100101111
3112221010201201021
430301101230233
5414321303033
633131555011
75211021331
oct1461215457
9487121637
10214244143
11aaa31883
125b8bba67
13355038a9
142064d451
1513c1eb2d
hexcc51b2f

214244143 has 4 divisors (see below), whose sum is σ = 214276840. Its totient is φ = 214211448.

The previous prime is 214244137. The next prime is 214244159. The reversal of 214244143 is 341442412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-214244143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214244543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2748 + ... + 20881.

It is an arithmetic number, because the mean of its divisors is an integer number (53569210).

Almost surely, 2214244143 is an apocalyptic number.

214244143 is a deficient number, since it is larger than the sum of its proper divisors (32697).

214244143 is an equidigital number, since it uses as much as digits as its factorization.

214244143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32696.

The product of its digits is 3072, while the sum is 25.

The square root of 214244143 is about 14637.0810956283. The cubic root of 214244143 is about 598.3697811371.

Adding to 214244143 its reverse (341442412), we get a palindrome (555686555).

The spelling of 214244143 in words is "two hundred fourteen million, two hundred forty-four thousand, one hundred forty-three".

Divisors: 1 9067 23629 214244143