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2020202000020 = 225175261576341
BaseRepresentation
bin11101011001011101011…
…011000010111010010100
321011010111100110210011001
4131121131123002322110
5231044333203000040
64144022403553044
7265645326446221
oct35313533027224
97133440423131
102020202000020
117098433a9476
1228764168b784
13118672a46739
146dac7918948
153783b84a59a
hex1d65d6c2e94

2020202000020 has 24 divisors (see below), whose sum is σ = 4242455767368. Its totient is φ = 808074787200.

The previous prime is 2020201999943. The next prime is 2020202000021. The reversal of 2020202000020 is 200002020202.

It can be written as a sum of positive squares in 4 ways, for example, as 754806489616 + 1265395510404 = 868796^2 + 1124898^2 .

It is a super-2 number, since 2×20202020000202 (a number of 25 digits) contains 22 as substring.

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 = 2020201999970 and 2020202000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020202000021) 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, 3217050 + ... + 3793390.

It is an arithmetic number, because the mean of its divisors is an integer number (176768990307).

Almost surely, 22020202000020 is an apocalyptic number.

2020202000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020202000020 is an abundant number, since it is smaller than the sum of its proper divisors (2222253767348).

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

2020202000020 is a wasteful number, since it uses less digits than its factorization.

2020202000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751611 (or 751609 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 2020202000020 its reverse (200002020202), we get a palindrome (2220204020222).

The spelling of 2020202000020 in words is "two trillion, twenty billion, two hundred two million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 175261 350522 576341 701044 876305 1152682 1752610 2305364 2881705 3505220 5763410 11526820 101010100001 202020200002 404040400004 505050500005 1010101000010 2020202000020