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20026741 = 7419439
BaseRepresentation
bin100110001100…
…1010101110101
31101200110112011
41030121111311
520111323431
61553124221
7332140000
oct114312565
941613464
1020026741
1110339429
126859671
1341c2657
142934537
151b58cb1
hex1319575

20026741 has 20 divisors (see below), whose sum is σ = 24648800. Its totient is φ = 16225272.

The previous prime is 20026729. The next prime is 20026753. The reversal of 20026741 is 14762002.

It is an interprime number because it is at equal distance from previous prime (20026729) and next prime (20026753).

It is not a de Polignac number, because 20026741 - 25 = 20026709 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 (20026711) 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 19 ways as a sum of consecutive naturals, for example, 45400 + ... + 45838.

It is an arithmetic number, because the mean of its divisors is an integer number (1232440).

Almost surely, 220026741 is an apocalyptic number.

It is an amenable number.

20026741 is a deficient number, since it is larger than the sum of its proper divisors (4622059).

20026741 is an frugal number, since it uses more digits than its factorization.

20026741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20026741 is about 4475.1246910002. The cubic root of 20026741 is about 271.5626848512.

Adding to 20026741 its reverse (14762002), we get a palindrome (34788743).

The spelling of 20026741 in words is "twenty million, twenty-six thousand, seven hundred forty-one".

Divisors: 1 7 19 49 133 343 439 931 2401 3073 6517 8341 21511 45619 58387 150577 408709 1054039 2860963 20026741