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BaseRepresentation
bin110101110111001100
3102012122010
4311313030
524024440
64421220
71606131
oct656714
9365563
10220620
11140834
12a7810
137955a
145a588
1545580
hex35dcc

220620 has 24 divisors (see below), whose sum is σ = 617904. Its totient is φ = 58816.

The previous prime is 220613. The next prime is 220663. The reversal of 220620 is 26022.

Adding to 220620 its reverse (26022), we get a palindrome (246642).

220620 is nontrivially palindromic in base 9.

220620 is digitally balanced in base 3, 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 220596 and 220605.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220620.

It is an unprimeable number.

220620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (25746).

2220620 is an apocalyptic number.

220620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220620 is an abundant number, since it is smaller than the sum of its proper divisors (397284).

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

220620 is a wasteful number, since it uses less digits than its factorization.

220620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 220620 is about 469.7020332083. The cubic root of 220620 is about 60.4247636129.

The spelling of 220620 in words is "two hundred twenty thousand, six hundred twenty".