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20560014 = 2331929691
BaseRepresentation
bin100111001101…
…1100010001110
31102200120001000
41032123202032
520230410024
62012401130
7336520506
oct116334216
942616030
1020560014
1110673052
126a761a6
13434b2b7
142a32a06
151c11cc9
hex139b88e

20560014 has 64 divisors (see below), whose sum is σ = 49824000. Its totient is φ = 6259680.

The previous prime is 20560003. The next prime is 20560019. The reversal of 20560014 is 41006502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560019) 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 31 ways as a sum of consecutive naturals, for example, 29409 + ... + 30099.

It is an arithmetic number, because the mean of its divisors is an integer number (778500).

Almost surely, 220560014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20560014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24912000).

20560014 is an abundant number, since it is smaller than the sum of its proper divisors (29263986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20560014 is a wasteful number, since it uses less digits than its factorization.

20560014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20560014 is about 4534.3151632854. The cubic root of 20560014 is about 273.9519957816.

Adding to 20560014 its reverse (41006502), we get a palindrome (61566516).

The spelling of 20560014 in words is "twenty million, five hundred sixty thousand, fourteen".

Divisors: 1 2 3 6 9 18 19 27 29 38 54 57 58 87 114 171 174 261 342 513 522 551 691 783 1026 1102 1382 1566 1653 2073 3306 4146 4959 6219 9918 12438 13129 14877 18657 20039 26258 29754 37314 39387 40078 60117 78774 118161 120234 180351 236322 354483 360702 380741 541053 708966 761482 1082106 1142223 2284446 3426669 6853338 10280007 20560014