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20330202220 = 2256471571113
BaseRepresentation
bin10010111011110001…
…100100010001101100
31221110211212021112121
4102323301210101230
5313114012432340
613201202442324
71316541603406
oct227361442154
957424767477
1020330202220
118692961919
123b346633a4
131bbcc1b773
14dac0bbb76
157dec4394a
hex4bbc6446c

20330202220 has 24 divisors (see below), whose sum is σ = 42759438624. Its totient is φ = 8119506816.

The previous prime is 20330202203. The next prime is 20330202227. The reversal of 20330202220 is 2220203302.

It is a junction number, because it is equal to n+sod(n) for n = 20330202194 and 20330202203.

It is not an unprimeable number, because it can be changed into a prime (20330202227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772617 + ... + 798496.

It is an arithmetic number, because the mean of its divisors is an integer number (1781643276).

Almost surely, 220330202220 is an apocalyptic number.

20330202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330202220 is an abundant number, since it is smaller than the sum of its proper divisors (22429236404).

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

20330202220 is a wasteful number, since it uses less digits than its factorization.

20330202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571769 (or 1571767 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20330202220 its reverse (2220203302), we get a palindrome (22550405522).

The spelling of 20330202220 in words is "twenty billion, three hundred thirty million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 647 1294 2588 3235 6470 12940 1571113 3142226 6284452 7855565 15711130 31422260 1016510111 2033020222 4066040444 5082550555 10165101110 20330202220