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838324105 = 5167664821
BaseRepresentation
bin110001111101111…
…100111110001001
32011102110021110221
4301331330332021
53204102332410
6215104110041
726526431413
oct6175747611
92142407427
10838324105
113a0237343
121b4905321
131048b0988
147d4a39b3
154d8e74da
hex31f7cf89

838324105 has 4 divisors (see below), whose sum is σ = 1005988932. Its totient is φ = 670659280.

The previous prime is 838324093. The next prime is 838324121. The reversal of 838324105 is 501423838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501423838 = 2250711919.

It can be written as a sum of positive squares in 2 ways, for example, as 116380944 + 721943161 = 10788^2 + 26869^2 .

It is not a de Polignac number, because 838324105 - 213 = 838315913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 83832406 + ... + 83832415.

It is an arithmetic number, because the mean of its divisors is an integer number (251497233).

Almost surely, 2838324105 is an apocalyptic number.

It is an amenable number.

838324105 is a deficient number, since it is larger than the sum of its proper divisors (167664827).

838324105 is a wasteful number, since it uses less digits than its factorization.

838324105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167664826.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 838324105 is about 28953.8271218159. The cubic root of 838324105 is about 942.9108894271.

The spelling of 838324105 in words is "eight hundred thirty-eight million, three hundred twenty-four thousand, one hundred five".

Divisors: 1 5 167664821 838324105