• 214 can be written using four 4's:
214 has 4 divisors (see below), whose sum is σ = 324. Its totient is φ = 106.
The previous prime is 211. The next prime is 223. The reversal of 214 is 412.
214 is nontrivially palindromic in base 7.
It is a semiprime because it is the product of two primes.
It is an alternating number because its digits alternate between even and odd.
214 is an undulating number in base 7.
It is a plaindrome in base 9, base 12, base 13 and base 14.
It is a nialpdrome in base 6, base 15 and base 16.
It is a junction number, because it is equal to n+sod(n) for n = 197 and 206.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52 + ... + 55.
It is an arithmetic number, because the mean of its divisors is an integer number (81).
214 is a deficient number, since it is larger than the sum of its proper divisors (110).
214 is a wasteful number, since it uses less digits than its factorization.
214 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 109.
The product of its digits is 8, while the sum is 7.
The square root of 214 is about 14.6287388383. The cubic root of 214 is about 5.9814240297.
Adding to 214 its reverse (412), we get a palindrome (626).
It can be divided in two parts, 21 and 4, that added together give a square (25 = 52).
The spelling of 214 in words is "two hundred fourteen", and thus it is an aban number and an iban number.
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