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20132838 = 23211101681
BaseRepresentation
bin100110011001…
…1001111100110
31101212212001200
41030303033212
520123222323
61555303330
7333061215
oct114631746
941785050
1020132838
1110401110
1268aab46
13422ba2b
14296107c
151b7a443
hex13333e6

20132838 has 24 divisors (see below), whose sum is σ = 47587176. Its totient is φ = 6100800.

The previous prime is 20132821. The next prime is 20132851. The reversal of 20132838 is 83823102.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent 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, 50643 + ... + 51038.

It is an arithmetic number, because the mean of its divisors is an integer number (1982799).

Almost surely, 220132838 is an apocalyptic number.

20132838 is an abundant number, since it is smaller than the sum of its proper divisors (27454338).

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

20132838 is a wasteful number, since it uses less digits than its factorization.

20132838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700 (or 101697 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20132838 is about 4486.9631155159. The cubic root of 20132838 is about 272.0413990476.

It can be divided in two parts, 2013 and 2838, that added together give a triangular number (4851 = T98).

The spelling of 20132838 in words is "twenty million, one hundred thirty-two thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 101681 203362 305043 610086 915129 1118491 1830258 2236982 3355473 6710946 10066419 20132838