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20412430241 = 722318112183
BaseRepresentation
bin10011000000101011…
…001111011110100001
31221200120120220011212
4103000223033132201
5313301040231431
613213301115505
71321560536300
oct230053173641
957616526155
1020412430241
118725314a65
123b580b8b95
131c03c7bcb8
14db8da4437
157e708772b
hex4c0acf7a1

20412430241 has 12 divisors (see below), whose sum is σ = 24777467712. Its totient is φ = 16735656168.

The previous prime is 20412430231. The next prime is 20412430243. The reversal of 20412430241 is 14203421402.

It is not a de Polignac number, because 20412430241 - 210 = 20412429217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412430243) 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 11 ways as a sum of consecutive naturals, for example, 9054965 + ... + 9057218.

It is an arithmetic number, because the mean of its divisors is an integer number (2064788976).

Almost surely, 220412430241 is an apocalyptic number.

It is an amenable number.

20412430241 is a deficient number, since it is larger than the sum of its proper divisors (4365037471).

20412430241 is a wasteful number, since it uses less digits than its factorization.

20412430241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18112220 (or 18112213 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20412430241 its reverse (14203421402), we get a palindrome (34615851643).

The spelling of 20412430241 in words is "twenty billion, four hundred twelve million, four hundred thirty thousand, two hundred forty-one".

Divisors: 1 7 23 49 161 1127 18112183 126785281 416580209 887496967 2916061463 20412430241