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20013295 = 512731517
BaseRepresentation
bin100110001011…
…0000011101111
31101122210002011
41030112003233
520110411140
61552542051
7332052541
oct114260357
941583064
1020013295
111032a315
126851927
1341b94b3
14292d691
151b54cea
hex13160ef

20013295 has 8 divisors (see below), whose sum is σ = 24205824. Its totient is φ = 15884064.

The previous prime is 20013293. The next prime is 20013299. The reversal of 20013295 is 59231002.

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 20013295 - 21 = 20013293 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 (20013293) 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 7 ways as a sum of consecutive naturals, for example, 15124 + ... + 16393.

It is an arithmetic number, because the mean of its divisors is an integer number (3025728).

Almost surely, 220013295 is an apocalyptic number.

20013295 is a deficient number, since it is larger than the sum of its proper divisors (4192529).

20013295 is a wasteful number, since it uses less digits than its factorization.

20013295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31649.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20013295 is about 4473.6221342442. The cubic root of 20013295 is about 271.5018953072.

Adding to 20013295 its reverse (59231002), we get a palindrome (79244297).

The spelling of 20013295 in words is "twenty million, thirteen thousand, two hundred ninety-five".

Divisors: 1 5 127 635 31517 157585 4002659 20013295