Search a number
-
+
20303101212 = 22371157151783
BaseRepresentation
bin10010111010001010…
…001011110100011100
31221101221212101221120
4102322022023310130
5313040043214322
613154353530540
71316062340622
oct227212136434
957357771846
1020303101212
118679631499
123b27573a50
131bb7420174
14da8665512
157dc68da5c
hex4ba28bd1c

20303101212 has 48 divisors (see below), whose sum is σ = 48347453952. Its totient is φ = 6629837760.

The previous prime is 20303101211. The next prime is 20303101249. The reversal of 20303101212 is 21210130302.

It is a junction number, because it is equal to n+sod(n) for n = 20303101191 and 20303101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303101211) 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 15 ways as a sum of consecutive naturals, for example, 57873 + ... + 209655.

It is an arithmetic number, because the mean of its divisors is an integer number (1007238624).

Almost surely, 220303101212 is an apocalyptic number.

It is an amenable number.

20303101212 is an abundant number, since it is smaller than the sum of its proper divisors (28044352740).

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

20303101212 is a wasteful number, since it uses less digits than its factorization.

20303101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152018 (or 152016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20303101212 its reverse (21210130302), we get a palindrome (41513231514).

The spelling of 20303101212 in words is "twenty billion, three hundred three million, one hundred one thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 71 142 157 213 284 314 426 471 628 852 942 1884 11147 22294 33441 44588 66882 133764 151783 303566 455349 607132 910698 1821396 10776593 21553186 23829931 32329779 43106372 47659862 64659558 71489793 95319724 129319116 142979586 285959172 1691925101 3383850202 5075775303 6767700404 10151550606 20303101212