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389300 = 225217229
BaseRepresentation
bin1011111000010110100
3201210000112
41133002310
544424200
612202152
73210662
oct1370264
9653015
10389300
1124653a
12169358
13108272
14a1c32
157a535
hex5f0b4

389300 has 36 divisors (see below), whose sum is σ = 898380. Its totient is φ = 145920.

The previous prime is 389299. The next prime is 389303. The reversal of 389300 is 3983.

It can be written as a sum of positive squares in 6 ways, for example, as 26896 + 362404 = 164^2 + 602^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1586 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (24955).

2389300 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 389300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449190).

389300 is an abundant number, since it is smaller than the sum of its proper divisors (509080).

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

389300 is a wasteful number, since it uses less digits than its factorization.

389300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 389300 is about 623.9390995923. The cubic root of 389300 is about 73.0176975920.

The spelling of 389300 in words is "three hundred eighty-nine thousand, three hundred".

Divisors: 1 2 4 5 10 17 20 25 34 50 68 85 100 170 229 340 425 458 850 916 1145 1700 2290 3893 4580 5725 7786 11450 15572 19465 22900 38930 77860 97325 194650 389300