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389862 = 232112179
BaseRepresentation
bin1011111001011100110
3201210210100
41133023212
544433422
612204530
73212424
oct1371346
9653710
10389862
11246a00
12169746
131085b5
14a2114
157a7ac
hex5f2e6

389862 has 36 divisors (see below), whose sum is σ = 933660. Its totient is φ = 117480.

The previous prime is 389849. The next prime is 389867. The reversal of 389862 is 268983.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389867) by changing a digit.

389862 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 17 ways as a sum of consecutive naturals, for example, 2089 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (25935).

2389862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466830).

389862 is an abundant number, since it is smaller than the sum of its proper divisors (543798).

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

389862 is a wasteful number, since it uses less digits than its factorization.

389862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 195 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 389862 is about 624.3893016380. The cubic root of 389862 is about 73.0528172213.

The spelling of 389862 in words is "three hundred eighty-nine thousand, eight hundred sixty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 121 179 198 242 358 363 537 726 1074 1089 1611 1969 2178 3222 3938 5907 11814 17721 21659 35442 43318 64977 129954 194931 389862