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20427048143 = 193541303617
BaseRepresentation
bin10011000001100011…
…000000010011001111
31221201121002120011122
4103001203000103033
5313313311020033
613214542311155
71322126021135
oct230143002317
957647076148
1020427048143
118732599677
123b60b884bb
131c06cc9748
14dbaccb755
157e84c3a98
hex4c18c04cf

20427048143 has 8 divisors (see below), whose sum is σ = 21508299120. Its totient is φ = 19346411520.

The previous prime is 20427048107. The next prime is 20427048149. The reversal of 20427048143 is 34184072402.

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

It is a cyclic number.

It is not a de Polignac number, because 20427048143 - 28 = 20427047887 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 (20427048149) 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, 84530 + ... + 219087.

It is an arithmetic number, because the mean of its divisors is an integer number (2688537390).

Almost surely, 220427048143 is an apocalyptic number.

20427048143 is a deficient number, since it is larger than the sum of its proper divisors (1081250977).

20427048143 is a wasteful number, since it uses less digits than its factorization.

20427048143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307177.

The product of its (nonzero) digits is 43008, while the sum is 35.

The spelling of 20427048143 in words is "twenty billion, four hundred twenty-seven million, forty-eight thousand, one hundred forty-three".

Divisors: 1 19 3541 67279 303617 5768723 1075107797 20427048143