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389896 = 231323163
BaseRepresentation
bin1011111001100001000
3201210211121
41133030020
544434041
612205024
73212503
oct1371410
9653747
10389896
11246a31
12169774
13108610
14a213a
157a7d1
hex5f308

389896 has 32 divisors (see below), whose sum is σ = 826560. Its totient is φ = 171072.

The previous prime is 389891. The next prime is 389897. The reversal of 389896 is 698983.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (389891) by changing a digit.

389896 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 7 ways as a sum of consecutive naturals, for example, 2311 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (25830).

389896 is a Friedman number, since it can be written as (8-3)^8-9^(9-6), using all its digits and the basic arithmetic operations.

2389896 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 389896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413280).

389896 is an abundant number, since it is smaller than the sum of its proper divisors (436664).

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

389896 is a wasteful number, since it uses less digits than its factorization.

389896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 201 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 389896 is about 624.4165276480. The cubic root of 389896 is about 73.0549408134.

The spelling of 389896 in words is "three hundred eighty-nine thousand, eight hundred ninety-six".

Divisors: 1 2 4 8 13 23 26 46 52 92 104 163 184 299 326 598 652 1196 1304 2119 2392 3749 4238 7498 8476 14996 16952 29992 48737 97474 194948 389896