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20326936 = 237477723
BaseRepresentation
bin100110110001…
…0101000011000
31102020201022111
41031202220120
520200430221
62003402104
7334530130
oct115425030
942221274
1020326936
1110523a23
126983334
134299196
1429b1ac0
151bb7be1
hex1362a18

20326936 has 32 divisors (see below), whose sum is σ = 44490240. Its totient is φ = 8525088.

The previous prime is 20326921. The next prime is 20326961. The reversal of 20326936 is 63962302.

It is a junction number, because it is equal to n+sod(n) for n = 20326898 and 20326907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (1390320).

Almost surely, 220326936 is an apocalyptic number.

It is an amenable number.

20326936 is an abundant number, since it is smaller than the sum of its proper divisors (24163304).

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

20326936 is a wasteful number, since it uses less digits than its factorization.

20326936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783 (or 7779 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 20326936 is about 4508.5403402875. The cubic root of 20326936 is about 272.9128427826.

The spelling of 20326936 in words is "twenty million, three hundred twenty-six thousand, nine hundred thirty-six".

Divisors: 1 2 4 7 8 14 28 47 56 94 188 329 376 658 1316 2632 7723 15446 30892 54061 61784 108122 216244 362981 432488 725962 1451924 2540867 2903848 5081734 10163468 20326936