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2020220 = 225831217
BaseRepresentation
bin111101101001101111100
310210122012222
413231031330
51004121340
6111144512
723112566
oct7551574
93718188
102020220
11115a904
12815138
135596c7
143a8336
1529d8b5
hex1ed37c

2020220 has 24 divisors (see below), whose sum is σ = 4297104. Its totient is φ = 797696.

The previous prime is 2020181. The next prime is 2020223. The reversal of 2020220 is 220202.

It is a junction number, because it is equal to n+sod(n) for n = 2020198 and 2020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (179046).

22020220 is an apocalyptic number.

2020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020220 is an abundant number, since it is smaller than the sum of its proper divisors (2276884).

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

2020220 is a wasteful number, since it uses less digits than its factorization.

2020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 2020220 is about 1421.3444339779. The cubic root of 2020220 is about 126.4152754866.

Adding to 2020220 its reverse (220202), we get a palindrome (2240422).

The spelling of 2020220 in words is "two million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1217 1660 2434 4868 6085 12170 24340 101011 202022 404044 505055 1010110 2020220