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20386008 = 2332283139
BaseRepresentation
bin100110111000…
…1000011011000
31102100201100100
41031301003120
520204323013
62004535400
7335164266
oct115610330
942321310
1020386008
1110564345
1269b1560
1342ba036
1429c9436
151bca473
hex13710d8

20386008 has 24 divisors (see below), whose sum is σ = 55212300. Its totient is φ = 6795312.

The previous prime is 20385997. The next prime is 20386013. The reversal of 20386008 is 80068302.

20386008 is a `hidden beast` number, since 20 + 38 + 600 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141498 + ... + 141641.

Almost surely, 220386008 is an apocalyptic number.

It is an amenable number.

20386008 is an abundant number, since it is smaller than the sum of its proper divisors (34826292).

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

20386008 is a wasteful number, since it uses less digits than its factorization.

20386008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283151 (or 283144 counting only the distinct ones).

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

The square root of 20386008 is about 4515.0867101308. The cubic root of 20386008 is about 273.1769572846.

The spelling of 20386008 in words is "twenty million, three hundred eighty-six thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 283139 566278 849417 1132556 1698834 2265112 2548251 3397668 5096502 6795336 10193004 20386008