Search a number
-
+
20310200020 = 2251192319091
BaseRepresentation
bin10010111010100101…
…010000111011010100
31221102110020001200101
4102322211100323110
5313043402400040
613155210023444
71316206565065
oct227245207324
957373201611
1020310200020
11868263a980
123b29a17b84
131bb8a37346
14da959256c
157dd0e209a
hex4ba950ed4

20310200020 has 24 divisors (see below), whose sum is σ = 46528822368. Its totient is φ = 7385527200.

The previous prime is 20310200017. The next prime is 20310200023. The reversal of 20310200020 is 2000201302.

It is an interprime number because it is at equal distance from previous prime (20310200017) and next prime (20310200023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310200023) 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, 46159326 + ... + 46159765.

It is an arithmetic number, because the mean of its divisors is an integer number (1938700932).

Almost surely, 220310200020 is an apocalyptic number.

20310200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310200020 is an abundant number, since it is smaller than the sum of its proper divisors (26218622348).

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

20310200020 is a wasteful number, since it uses less digits than its factorization.

20310200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92319111 (or 92319109 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20310200020 its reverse (2000201302), we get a palindrome (22310401322).

The spelling of 20310200020 in words is "twenty billion, three hundred ten million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 92319091 184638182 369276364 461595455 923190910 1015510001 1846381820 2031020002 4062040004 5077550005 10155100010 20310200020