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20000022020 = 22511101900091
BaseRepresentation
bin10010101000000110…
…000001111000000100
31220121211120101110022
4102220012001320010
5311430001201040
613104325514312
71305422245046
oct225006017004
956554511408
1020000022020
118533544620
123a61b72998
131b696b4974
14d7a2cda96
157c0c726b5
hex4a8181e04

20000022020 has 48 divisors (see below), whose sum is σ = 46271929536. Its totient is φ = 7200720000.

The previous prime is 20000022017. The next prime is 20000022023. The reversal of 20000022020 is 2022000002.

It is an interprime number because it is at equal distance from previous prime (20000022017) and next prime (20000022023).

It is a junction number, because it is equal to n+sod(n) for n = 20000021989 and 20000022007.

It is not an unprimeable number, because it can be changed into a prime (20000022023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 427826 + ... + 472265.

It is an arithmetic number, because the mean of its divisors is an integer number (963998532).

Almost surely, 220000022020 is an apocalyptic number.

20000022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000022020 is an abundant number, since it is smaller than the sum of its proper divisors (26271907516).

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

20000022020 is a wasteful number, since it uses less digits than its factorization.

20000022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900212 (or 900210 counting only the distinct ones).

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

Adding to 20000022020 its reverse (2022000002), we get a palindrome (22022022022).

The spelling of 20000022020 in words is "twenty billion, twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 101 110 202 220 404 505 1010 1111 2020 2222 4444 5555 11110 22220 900091 1800182 3600364 4500455 9000910 9901001 18001820 19802002 39604004 49505005 90909191 99010010 181818382 198020020 363636764 454545955 909091910 1000001101 1818183820 2000002202 4000004404 5000005505 10000011010 20000022020