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2005141445 = 51672401367
BaseRepresentation
bin111011110000100…
…0000011111000101
312011202000201221222
41313201000133011
513101304011240
6530545050125
7100455264266
oct16741003705
95152021858
102005141445
1193993949a
1247b626945
1325c557638
1415043696d
15bb07aeb5
hex778407c5

2005141445 has 8 divisors (see below), whose sum is σ = 2420578944. Its totient is φ = 1594507024.

The previous prime is 2005141433. The next prime is 2005141447. The reversal of 2005141445 is 5441415002.

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 2005141445 - 28 = 2005141189 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 (2005141447) 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, 1199849 + ... + 1201518.

It is an arithmetic number, because the mean of its divisors is an integer number (302572368).

Almost surely, 22005141445 is an apocalyptic number.

It is an amenable number.

2005141445 is a deficient number, since it is larger than the sum of its proper divisors (415437499).

2005141445 is a wasteful number, since it uses less digits than its factorization.

2005141445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401539.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2005141445 is about 44778.8057567417. The cubic root of 2005141445 is about 1260.9997618629. Note that the first 3 decimals are identical.

Adding to 2005141445 its reverse (5441415002), we get a palindrome (7446556447).

The spelling of 2005141445 in words is "two billion, five million, one hundred forty-one thousand, four hundred forty-five".

Divisors: 1 5 167 835 2401367 12006835 401028289 2005141445