Search a number
-
+
20300430100 = 22521187171023
BaseRepresentation
bin10010111001111111…
…111111101100010100
31221101202211200212111
4102321333333230110
5313033402230400
613154220400404
71316030544256
oct227177775424
957352750774
1020300430100
118678077665
123b266a6104
131bb69c6422
14da816bcd6
157dc3123ba
hex4b9fffb14

20300430100 has 36 divisors (see below), whose sum is σ = 44089303104. Its totient is φ = 8113283680.

The previous prime is 20300430097. The next prime is 20300430103. The reversal of 20300430100 is 103400302.

It is an interprime number because it is at equal distance from previous prime (20300430097) and next prime (20300430103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300430103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33189 + ... + 204211.

It is an arithmetic number, because the mean of its divisors is an integer number (1224702864).

Almost surely, 220300430100 is an apocalyptic number.

20300430100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300430100 is an abundant number, since it is smaller than the sum of its proper divisors (23788873004).

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

20300430100 is a wasteful number, since it uses less digits than its factorization.

20300430100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172224 (or 172217 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20300430100 its reverse (103400302), we get a palindrome (20403830402).

The spelling of 20300430100 in words is "twenty billion, three hundred million, four hundred thirty thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1187 2374 4748 5935 11870 23740 29675 59350 118700 171023 342046 684092 855115 1710230 3420460 4275575 8551150 17102300 203004301 406008602 812017204 1015021505 2030043010 4060086020 5075107525 10150215050 20300430100