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1384213 = 4332191
BaseRepresentation
bin101010001111100010101
32121022210011
411101330111
5323243323
645400221
714523415
oct5217425
92538704
101384213
11865a86
12569071
1339607c
14280645
151c520d
hex151f15

1384213 has 4 divisors (see below), whose sum is σ = 1416448. Its totient is φ = 1351980.

The previous prime is 1384193. The next prime is 1384219. The reversal of 1384213 is 3124831.

1384213 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3124831 = 31100801.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1384213 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 (1384219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16053 + ... + 16138.

It is an arithmetic number, because the mean of its divisors is an integer number (354112).

21384213 is an apocalyptic number.

It is an amenable number.

1384213 is a deficient number, since it is larger than the sum of its proper divisors (32235).

1384213 is an equidigital number, since it uses as much as digits as its factorization.

1384213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32234.

The product of its digits is 576, while the sum is 22.

The square root of 1384213 is about 1176.5258178213. The cubic root of 1384213 is about 111.4468098101.

The spelling of 1384213 in words is "one million, three hundred eighty-four thousand, two hundred thirteen".

Divisors: 1 43 32191 1384213