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389213 = 1141863
BaseRepresentation
bin1011111000001011101
3201202220022
41133001131
544423323
612201525
73210506
oct1370135
9652808
10389213
11246470
121692a5
13108206
14a1bad
157a4c8
hex5f05d

389213 has 8 divisors (see below), whose sum is σ = 435456. Its totient is φ = 344800.

The previous prime is 389189. The next prime is 389219. The reversal of 389213 is 312983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389213 - 26 = 389149 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 (389219) 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 7 ways as a sum of consecutive naturals, for example, 20 + ... + 882.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2389213 is an apocalyptic number.

It is an amenable number.

389213 is a deficient number, since it is larger than the sum of its proper divisors (46243).

389213 is a wasteful number, since it uses less digits than its factorization.

389213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915.

The product of its digits is 1296, while the sum is 26.

The square root of 389213 is about 623.8693773539. The cubic root of 389213 is about 73.0122579028.

The spelling of 389213 in words is "three hundred eighty-nine thousand, two hundred thirteen".

Divisors: 1 11 41 451 863 9493 35383 389213