Search a number
-
+
20330223020 = 22523173255469
BaseRepresentation
bin10010111011110001…
…101001010110101100
31221110211220100001222
4102323301221112230
5313114014114040
613201203122512
71316542021142
oct227361512654
957424810058
1020330223020
118692976508
123b34673438
131bbcc28083
14dac0c5592
157dec49bb5
hex4bbc695ac

20330223020 has 48 divisors (see below), whose sum is σ = 44807394240. Its totient is φ = 7733527296.

The previous prime is 20330222993. The next prime is 20330223031. The reversal of 20330223020 is 2032203302.

It is a self number, because there is not a number n which added to its sum of digits gives 20330223020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48155 + ... + 207314.

It is an arithmetic number, because the mean of its divisors is an integer number (933487380).

Almost surely, 220330223020 is an apocalyptic number.

20330223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330223020 is an abundant number, since it is smaller than the sum of its proper divisors (24477171220).

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

20330223020 is a wasteful number, since it uses less digits than its factorization.

20330223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255674 (or 255672 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 20330223020 its reverse (2032203302), we get a palindrome (22362426322).

The spelling of 20330223020 in words is "twenty billion, three hundred thirty million, two hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 173 230 346 460 692 865 1730 3460 3979 7958 15916 19895 39790 79580 255469 510938 1021876 1277345 2554690 5109380 5875787 11751574 23503148 29378935 44196137 58757870 88392274 117515740 176784548 220980685 441961370 883922740 1016511151 2033022302 4066044604 5082555755 10165111510 20330223020