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2020020210 = 2325131726513
BaseRepresentation
bin111100001100111…
…0000111111110010
312012210000122210100
41320121300333302
513114111121320
6532240013230
7101025613515
oct17031607762
95183018710
102020020210
1194728109a
12484601216
13262666a40
141523cad7c
15bc519790
hex78670ff2

2020020210 has 48 divisors (see below), whose sum is σ = 5656059864. Its totient is φ = 497235456.

The previous prime is 2020020203. The next prime is 2020020227. The reversal of 2020020210 is 120200202.

It can be written as a sum of positive squares in 4 ways, for example, as 679801329 + 1340218881 = 26073^2 + 36609^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2020020192 and 2020020201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862087 + ... + 864426.

Almost surely, 22020020210 is an apocalyptic number.

2020020210 is an abundant number, since it is smaller than the sum of its proper divisors (3636039654).

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

2020020210 is a wasteful number, since it uses less digits than its factorization.

2020020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726539 (or 1726536 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2020020210 is about 44944.6349412252. The cubic root of 2020020210 is about 1264.1110806247. Note that the first 3 decimals are identical.

Adding to 2020020210 its reverse (120200202), we get a palindrome (2140220412).

The spelling of 2020020210 in words is "two billion, twenty million, twenty thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 1726513 3453026 5179539 8632565 10359078 15538617 17265130 22444669 25897695 31077234 44889338 51795390 67334007 77693085 112223345 134668014 155386170 202002021 224446690 336670035 404004042 673340070 1010010105 2020020210