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220000 = 255411
BaseRepresentation
bin110101101101100000
3102011210011
4311231200
524020000
64414304
71604254
oct655540
9364704
10220000
11140320
12a7394
13791a1
145a264
15452ba
hex35b60

220000 has 60 divisors (see below), whose sum is σ = 590436. Its totient is φ = 80000.

The previous prime is 219983. The next prime is 220009. The reversal of 220000 is 22.

Adding to 220000 its reverse (22), we get a palindrome (220022).

Multipling 220000 by its reverse (22), we get a square (4840000 = 22002).

220000 divided by its reverse (22) gives a 4-th power (10000 = 104).

It can be divided in two parts, 2 and 20000, that multiplied together give a square (40000 = 2002).

220000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (4).

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 8 and base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19995 + ... + 20005.

2220000 is an apocalyptic number.

220000 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 220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295218).

220000 is an abundant number, since it is smaller than the sum of its proper divisors (370436).

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

220000 is an equidigital number, since it uses as much as digits as its factorization.

220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 4.

The square root of 220000 is about 469.0415759823. The cubic root of 220000 is about 60.3681073680.

The spelling of 220000 in words is "two hundred twenty thousand", and thus it is an iban number.

Divisors: 1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 80 88 100 110 125 160 176 200 220 250 275 352 400 440 500 550 625 800 880 1000 1100 1250 1375 1760 2000 2200 2500 2750 4000 4400 5000 5500 6875 8800 10000 11000 13750 20000 22000 27500 44000 55000 110000 220000