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389224 = 23114423
BaseRepresentation
bin1011111000001101000
3201202220201
41133001220
544423344
612201544
73210523
oct1370150
9652821
10389224
11246480
121692b4
13108214
14a1bba
157a4d4
hex5f068

389224 has 16 divisors (see below), whose sum is σ = 796320. Its totient is φ = 176880.

The previous prime is 389219. The next prime is 389227. The reversal of 389224 is 422983.

389224 = T177 + T178 + ... + T198.

It is a junction number, because it is equal to n+sod(n) for n = 389192 and 389201.

It is not an unprimeable number, because it can be changed into a prime (389227) by changing a digit.

389224 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (49770).

2389224 is an apocalyptic number.

It is an amenable number.

389224 is an abundant number, since it is smaller than the sum of its proper divisors (407096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389224 is a wasteful number, since it uses less digits than its factorization.

389224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440 (or 4436 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 389224 is about 623.8781932397. The cubic root of 389224 is about 73.0129457244.

It can be divided in two parts, 3892 and 24, that added together give a triangular number (3916 = T88).

The spelling of 389224 in words is "three hundred eighty-nine thousand, two hundred twenty-four".

Divisors: 1 2 4 8 11 22 44 88 4423 8846 17692 35384 48653 97306 194612 389224