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20440130213 = 194192567533
BaseRepresentation
bin10011000010010100…
…111010001010100101
31221202111201012101202
4103002110322022211
5313330133131323
613220130532245
71322345145236
oct230224721245
957674635352
1020440130213
118739a143a8
123b65437085
131c0992a109
14dbc93508d
157e9709d28
hex4c253a2a5

20440130213 has 8 divisors (see below), whose sum is σ = 21567285600. Its totient is φ = 19318110768.

The previous prime is 20440130203. The next prime is 20440130239. The reversal of 20440130213 is 31203104402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20440130213 - 216 = 20440064677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440130203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275806 + ... + 1291727.

It is an arithmetic number, because the mean of its divisors is an integer number (2695910700).

Almost surely, 220440130213 is an apocalyptic number.

It is an amenable number.

20440130213 is a deficient number, since it is larger than the sum of its proper divisors (1127155387).

20440130213 is a wasteful number, since it uses less digits than its factorization.

20440130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567971.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20440130213 its reverse (31203104402), we get a palindrome (51643234615).

The spelling of 20440130213 in words is "twenty billion, four hundred forty million, one hundred thirty thousand, two hundred thirteen".

Divisors: 1 19 419 7961 2567533 48783127 1075796327 20440130213