214528 has 20 divisors (see below), whose sum is σ = 429660. Its totient is φ = 107008.
The previous prime is 214519. The next prime is 214531. The reversal of 214528 is 825412.
It is an Ulam number.
It is a nialpdrome in base 8.
It is a junction number, because it is equal to n+sod(n) for n = 214499 and 214508.
It is a congruent number.
It is an unprimeable number.
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, 303 + ... + 721.
It is an arithmetic number, because the mean of its divisors is an integer number (21483).
2214528 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 214528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214830).
214528 is an abundant number, since it is smaller than the sum of its proper divisors (215132).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
214528 is an frugal number, since it uses more digits than its factorization.
214528 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 437 (or 421 counting only the distinct ones).
The product of its digits is 640, while the sum is 22.
The square root of 214528 is about 463.1716744362. The cubic root of 214528 is about 59.8633929148.
The spelling of 214528 in words is "two hundred fourteen thousand, five hundred twenty-eight".
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