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20786106 = 2311228631
BaseRepresentation
bin100111101001…
…0101110111010
31110010001011210
41033102232322
520310123411
62021303550
7341451615
oct117225672
943101153
1020786106
1110807a00
126b64bb6
1343ca193
142a9117c
151c58ca6
hex13d2bba

20786106 has 24 divisors (see below), whose sum is σ = 45696672. Its totient is φ = 6298600.

The previous prime is 20786099. The next prime is 20786111. The reversal of 20786106 is 60168702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13590 + ... + 15041.

It is an arithmetic number, because the mean of its divisors is an integer number (1904028).

Almost surely, 220786106 is an apocalyptic number.

20786106 is an abundant number, since it is smaller than the sum of its proper divisors (24910566).

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

20786106 is a wasteful number, since it uses less digits than its factorization.

20786106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28658 (or 28647 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20786106 is about 4559.1782154244. The cubic root of 20786106 is about 274.9525251379.

The spelling of 20786106 in words is "twenty million, seven hundred eighty-six thousand, one hundred six".

Divisors: 1 2 3 6 11 22 33 66 121 242 363 726 28631 57262 85893 171786 314941 629882 944823 1889646 3464351 6928702 10393053 20786106