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20754383 = 132227541
BaseRepresentation
bin100111100101…
…0111111001111
31110001102122212
41033022333033
520303120013
62020501035
7341260256
oct117127717
943042585
1020754383
1110796091
126b4a77b
1343b8900
142a8379d
151c4e6a8
hex13cafcf

20754383 has 12 divisors (see below), whose sum is σ = 22614408. Its totient is φ = 19038240.

The previous prime is 20754367. The next prime is 20754413. The reversal of 20754383 is 38345702.

It is a happy number.

It is not a de Polignac number, because 20754383 - 24 = 20754367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38093 + ... + 38633.

It is an arithmetic number, because the mean of its divisors is an integer number (1884534).

Almost surely, 220754383 is an apocalyptic number.

20754383 is a deficient number, since it is larger than the sum of its proper divisors (1860025).

20754383 is a wasteful number, since it uses less digits than its factorization.

20754383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20754383 is about 4555.6978609210. The cubic root of 20754383 is about 274.8125797348.

The spelling of 20754383 in words is "twenty million, seven hundred fifty-four thousand, three hundred eighty-three".

Divisors: 1 13 169 227 541 2951 7033 38363 91429 122807 1596491 20754383