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2020112020 = 225139726659
BaseRepresentation
bin111100001101000…
…0111011010010100
312012210012022201201
41320122013122110
513114122041040
6532242002244
7101026445263
oct17032073224
95183168651
102020112020
11947334073
12484646384
13262699774
141524125da
15bc536a9a
hex78687694

2020112020 has 24 divisors (see below), whose sum is σ = 4272760800. Its totient is φ = 802230432.

The previous prime is 2020111967. The next prime is 2020112063. The reversal of 2020112020 is 202110202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2020111988 and 2020112006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360550 + ... + 366109.

It is an arithmetic number, because the mean of its divisors is an integer number (178031700).

Almost surely, 22020112020 is an apocalyptic number.

2020112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020112020 is an abundant number, since it is smaller than the sum of its proper divisors (2252648780).

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

2020112020 is a wasteful number, since it uses less digits than its factorization.

2020112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726807 (or 726805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2020112020 is about 44945.6562973554. The cubic root of 2020112020 is about 1264.1302316345.

Adding to 2020112020 its reverse (202110202), we get a palindrome (2222222222).

The spelling of 2020112020 in words is "two billion, twenty million, one hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 726659 1453318 2906636 3633295 7266590 14533180 101005601 202011202 404022404 505028005 1010056010 2020112020