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20013293 is a prime number
BaseRepresentation
bin100110001011…
…0000011101101
31101122210002002
41030112003231
520110411133
61552542045
7332052536
oct114260355
941583062
1020013293
111032a313
126851925
1341b94b1
14292d68d
151b54ce8
hex13160ed

20013293 has 2 divisors, whose sum is σ = 20013294. Its totient is φ = 20013292.

The previous prime is 20013271. The next prime is 20013299. The reversal of 20013293 is 39231002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17197609 + 2815684 = 4147^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013293 - 216 = 19947757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013299) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006646 + 10006647.

It is an arithmetic number, because the mean of its divisors is an integer number (10006647).

Almost surely, 220013293 is an apocalyptic number.

It is an amenable number.

20013293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013293 is an equidigital number, since it uses as much as digits as its factorization.

20013293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20013293 is about 4473.6219107117. The cubic root of 20013293 is about 271.5018862631.

Adding to 20013293 its reverse (39231002), we get a palindrome (59244295).

The spelling of 20013293 in words is "twenty million, thirteen thousand, two hundred ninety-three".