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20092717 = 28370999
BaseRepresentation
bin100110010100…
…1011100101101
31101210211000201
41030221130231
520120431332
61554353501
7332533231
oct114513455
941724021
1020092717
1110383a57
12688b891
1342166a8
1429505c1
151b6d5e7
hex132972d

20092717 has 4 divisors (see below), whose sum is σ = 20164000. Its totient is φ = 20021436.

The previous prime is 20092687. The next prime is 20092741. The reversal of 20092717 is 71729002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71729002 = 235864501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20092717 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 (20092117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35217 + ... + 35782.

It is an arithmetic number, because the mean of its divisors is an integer number (5041000).

Almost surely, 220092717 is an apocalyptic number.

It is an amenable number.

20092717 is a deficient number, since it is larger than the sum of its proper divisors (71283).

20092717 is an equidigital number, since it uses as much as digits as its factorization.

20092717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71282.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 20092717 is about 4482.4900446069. The cubic root of 20092717 is about 271.8605695780.

The spelling of 20092717 in words is "twenty million, ninety-two thousand, seven hundred seventeen".

Divisors: 1 283 70999 20092717