1328384 has 18 divisors (see below), whose sum is σ = 2652090. Its totient is φ = 664064.
The previous prime is 1328357. The next prime is 1328387. The reversal of 1328384 is 4838231.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 1254400 + 73984 = 1120^2 + 272^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1328387) 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, 2339 + ... + 2850.
21328384 is an apocalyptic number.
It is an amenable number.
1328384 is a deficient number, since it is larger than the sum of its proper divisors (1323706).
1328384 is an frugal number, since it uses more digits than its factorization.
1328384 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5205 (or 5191 counting only the distinct ones).
The product of its digits is 4608, while the sum is 29.
The square root of 1328384 is about 1152.5554216609. Note that the first 3 decimals coincide. The cubic root of 1328384 is about 109.9278866188.
The spelling of 1328384 in words is "one million, three hundred twenty-eight thousand, three hundred eighty-four".
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