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389112 = 23331523
BaseRepresentation
bin1011110111111111000
3201202202120
41132333320
544422422
612201240
73210303
oct1367770
9652676
10389112
11246389
12169220
13108159
14a1b3a
157a45c
hex5eff8

389112 has 32 divisors (see below), whose sum is σ = 1006080. Its totient is φ = 125280.

The previous prime is 389111. The next prime is 389117. The reversal of 389112 is 211983.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (31440).

2389112 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 389112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503040).

389112 is an abundant number, since it is smaller than the sum of its proper divisors (616968).

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

389112 is a wasteful number, since it uses less digits than its factorization.

389112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 559 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 389112 is about 623.7884256701. The cubic root of 389112 is about 73.0059418445.

The spelling of 389112 in words is "three hundred eighty-nine thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 31 62 93 124 186 248 372 523 744 1046 1569 2092 3138 4184 6276 12552 16213 32426 48639 64852 97278 129704 194556 389112