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107405905 = 5149144169
BaseRepresentation
bin1100110011011…
…10001001010001
321111002210012111
412121232021101
5204443442110
614354025321
72442635515
oct631561121
9244083174
10107405905
115569a712
122bb78241
13193376b9
141039c145
159668e8a
hex666e251

107405905 has 8 divisors (see below), whose sum is σ = 129753000. Its totient is φ = 85347456.

The previous prime is 107405897. The next prime is 107405911. The reversal of 107405905 is 509504701.

It can be written as a sum of positive squares in 4 ways, for example, as 986049 + 106419856 = 993^2 + 10316^2 .

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 107405905 - 23 = 107405897 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71340 + ... + 72829.

It is an arithmetic number, because the mean of its divisors is an integer number (16219125).

Almost surely, 2107405905 is an apocalyptic number.

It is an amenable number.

107405905 is a deficient number, since it is larger than the sum of its proper divisors (22347095).

107405905 is a wasteful number, since it uses less digits than its factorization.

107405905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144323.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 107405905 is about 10363.6820194369. The cubic root of 107405905 is about 475.3454993268.

The spelling of 107405905 in words is "one hundred seven million, four hundred five thousand, nine hundred five".

Divisors: 1 5 149 745 144169 720845 21481181 107405905