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20144061 = 327319747
BaseRepresentation
bin100110011010…
…1111110111101
31101220102110100
41030311332331
520124102221
61555431313
7333136020
oct114657675
941812410
1020144061
1110409593
1268b5539
134233b82
1429651b7
151b7d926
hex1335fbd

20144061 has 12 divisors (see below), whose sum is σ = 33253792. Its totient is φ = 11510856.

The previous prime is 20144053. The next prime is 20144071. The reversal of 20144061 is 16044102.

It is not a de Polignac number, because 20144061 - 23 = 20144053 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 (20144051) 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, 159811 + ... + 159936.

Almost surely, 220144061 is an apocalyptic number.

20144061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20144061 is a deficient number, since it is larger than the sum of its proper divisors (13109731).

20144061 is a wasteful number, since it uses less digits than its factorization.

20144061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319760 (or 319757 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20144061 is about 4488.2135644374. The cubic root of 20144061 is about 272.0919392559.

Adding to 20144061 its reverse (16044102), we get a palindrome (36188163).

The spelling of 20144061 in words is "twenty million, one hundred forty-four thousand, sixty-one".

Divisors: 1 3 7 9 21 63 319747 959241 2238229 2877723 6714687 20144061