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20358741 = 3131730707
BaseRepresentation
bin100110110101…
…0011001010101
31102022022221110
41031222121111
520202434431
62004205233
7335021634
oct115523125
942268843
1020358741
1110545907
126999819
1342aa7c0
1429bd51b
151bc2346
hex136a655

20358741 has 16 divisors (see below), whose sum is σ = 30953664. Its totient is φ = 11791104.

The previous prime is 20358733. The next prime is 20358761. The reversal of 20358741 is 14785302.

It is not a de Polignac number, because 20358741 - 23 = 20358733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20358699 and 20358708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20358721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14691 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (1934604).

Almost surely, 220358741 is an apocalyptic number.

It is an amenable number.

20358741 is a deficient number, since it is larger than the sum of its proper divisors (10594923).

20358741 is a wasteful number, since it uses less digits than its factorization.

20358741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30740.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20358741 is about 4512.0661564299. The cubic root of 20358741 is about 273.0551083587.

The spelling of 20358741 in words is "twenty million, three hundred fifty-eight thousand, seven hundred forty-one".

Divisors: 1 3 13 17 39 51 221 663 30707 92121 399191 522019 1197573 1566057 6786247 20358741