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20044141 = 132296733
BaseRepresentation
bin100110001110…
…1100101101101
31101201100101121
41030131211231
520112403031
61553340541
7332241505
oct114354555
941640347
1020044141
1110350507
126867751
1341ca550
14293aa05
151b5e011
hex131d96d

20044141 has 8 divisors (see below), whose sum is σ = 21683480. Its totient is φ = 18418752.

The previous prime is 20044127. The next prime is 20044147. The reversal of 20044141 is 14144002.

It can be written as a sum of positive squares in 4 ways, for example, as 10588516 + 9455625 = 3254^2 + 3075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20044141 - 213 = 20035949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (2710435).

Almost surely, 220044141 is an apocalyptic number.

It is an amenable number.

20044141 is a deficient number, since it is larger than the sum of its proper divisors (1639339).

20044141 is a wasteful number, since it uses less digits than its factorization.

20044141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6975.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20044141 is about 4477.0683488193. The cubic root of 20044141 is about 271.6413101070.

Adding to 20044141 its reverse (14144002), we get a palindrome (34188143).

The spelling of 20044141 in words is "twenty million, forty-four thousand, one hundred forty-one".

Divisors: 1 13 229 2977 6733 87529 1541857 20044141