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20334365 = 529140237
BaseRepresentation
bin100110110010…
…0011100011101
31102021002111122
41031210130131
520201144430
62003500325
7334560602
oct115443435
942232448
1020334365
1110529567
1269876a5
13429c68c
1429b46a9
151bb9ee5
hex136471d

20334365 has 8 divisors (see below), whose sum is σ = 25242840. Its totient is φ = 15706432.

The previous prime is 20334337. The next prime is 20334367. The reversal of 20334365 is 56343302.

It can be written as a sum of positive squares in 4 ways, for example, as 7958041 + 12376324 = 2821^2 + 3518^2 .

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 20334365 - 214 = 20317981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334367) 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, 69974 + ... + 70263.

It is an arithmetic number, because the mean of its divisors is an integer number (3155355).

Almost surely, 220334365 is an apocalyptic number.

It is an amenable number.

20334365 is a deficient number, since it is larger than the sum of its proper divisors (4908475).

20334365 is a wasteful number, since it uses less digits than its factorization.

20334365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140271.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 20334365 is about 4509.3641458636. The cubic root of 20334365 is about 272.9460863985.

Adding to 20334365 its reverse (56343302), we get a palindrome (76677667).

The spelling of 20334365 in words is "twenty million, three hundred thirty-four thousand, three hundred sixty-five".

Divisors: 1 5 29 145 140237 701185 4066873 20334365