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105238027 = 372844271
BaseRepresentation
bin1100100010111…
…00111000001011
321100000122102201
412101130320023
5203420104102
614235341031
72415336256
oct621347013
9240018381
10105238027
1154449984
122b2b1777
1318a58a2b
14dd9609d
15938b987
hex645ce0b

105238027 has 4 divisors (see below), whose sum is σ = 108082336. Its totient is φ = 102393720.

The previous prime is 105237997. The next prime is 105238043. The reversal of 105238027 is 720832501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720832501 = 7091016689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105238027 is a prime.

It is a super-2 number, since 2×1052380272 = 22150084653705458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105237986 and 105238004.

It is not an unprimeable number, because it can be changed into a prime (105238097) 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 3 ways as a sum of consecutive naturals, for example, 1422099 + ... + 1422172.

It is an arithmetic number, because the mean of its divisors is an integer number (27020584).

Almost surely, 2105238027 is an apocalyptic number.

105238027 is a deficient number, since it is larger than the sum of its proper divisors (2844309).

105238027 is an equidigital number, since it uses as much as digits as its factorization.

105238027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844308.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 105238027 is about 10258.5587194303. The cubic root of 105238027 is about 472.1256174200.

The spelling of 105238027 in words is "one hundred five million, two hundred thirty-eight thousand, twenty-seven".

Divisors: 1 37 2844271 105238027