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200000 = 2655
BaseRepresentation
bin110000110101000000
3101011100102
4300311000
522400000
64141532
71462043
oct606500
9334312
10200000
11127299
12978a8
1370058
1452c5a
153e3d5
hex30d40

200000 has 42 divisors (see below), whose sum is σ = 496062. Its totient is φ = 80000.

The previous prime is 199999. The next prime is 200003. The reversal of 200000 is 2.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 3 ways, for example, as 92416 + 107584 = 304^2 + 328^2 .

It is a sliding number, since 200000 = 100000 + 100000 and 1/100000 + 1/100000 = 0.0000200000.

It is a Harshad number since it is a multiple of its sum of digits (2).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39998 + ... + 40002.

It is an arithmetic number, because the mean of its divisors is an integer number (11811).

2200000 is an apocalyptic number.

200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248031).

200000 is an abundant number, since it is smaller than the sum of its proper divisors (296062).

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

200000 is an frugal number, since it uses more digits than its factorization.

200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 2.

The square root of 200000 is about 447.2135955000. The cubic root of 200000 is about 58.4803547643.

The spelling of 200000 in words is "two hundred thousand", and thus it is an iban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 160 200 250 320 400 500 625 800 1000 1250 1600 2000 2500 3125 4000 5000 6250 8000 10000 12500 20000 25000 40000 50000 100000 200000