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2100412005 = 35140027467
BaseRepresentation
bin111110100110001…
…1011111001100101
312102101021222121020
41331030123321211
513300201141010
6544231041353
7103023131106
oct17514337145
95371258536
102100412005
1198869a69a
124a7510259
13276203553
1415cd563ad
15c45e9470
hex7d31be65

2100412005 has 8 divisors (see below), whose sum is σ = 3360659232. Its totient is φ = 1120219728.

The previous prime is 2100411983. The next prime is 2100412009. The reversal of 2100412005 is 5002140012.

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

It is not a de Polignac number, because 2100412005 - 28 = 2100411749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 140027467 = 2100412005 / (2 + 1 + 0 + 0 + 4 + 1 + 2 + 0 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100412009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70013719 + ... + 70013748.

It is an arithmetic number, because the mean of its divisors is an integer number (420082404).

Almost surely, 22100412005 is an apocalyptic number.

It is an amenable number.

2100412005 is a deficient number, since it is larger than the sum of its proper divisors (1260247227).

2100412005 is a wasteful number, since it uses less digits than its factorization.

2100412005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140027475.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2100412005 is about 45830.2520721848. The cubic root of 2100412005 is about 1280.6629063396.

Adding to 2100412005 its reverse (5002140012), we get a palindrome (7102552017).

The spelling of 2100412005 in words is "two billion, one hundred million, four hundred twelve thousand, five".

Divisors: 1 3 5 15 140027467 420082401 700137335 2100412005