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107909005 = 5106120341
BaseRepresentation
bin1100110111010…
…00111110001101
321112001100022211
412123220332031
5210111042010
614412510421
72450132341
oct633507615
9245040284
10107909005
1155a036a6
123017b411
13194826a9
141048d621
15971808a
hex66e8f8d

107909005 has 8 divisors (see below), whose sum is σ = 129619224. Its totient is φ = 86241600.

The previous prime is 107909003. The next prime is 107909017. The reversal of 107909005 is 500909701.

It can be written as a sum of positive squares in 4 ways, for example, as 21846276 + 86062729 = 4674^2 + 9277^2 .

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

It is not a de Polignac number, because 107909005 - 21 = 107909003 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 (107909003) 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, 4866 + ... + 15475.

It is an arithmetic number, because the mean of its divisors is an integer number (16202403).

Almost surely, 2107909005 is an apocalyptic number.

It is an amenable number.

107909005 is a deficient number, since it is larger than the sum of its proper divisors (21710219).

107909005 is a wasteful number, since it uses less digits than its factorization.

107909005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21407.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 107909005 is about 10387.9259238791. The cubic root of 107909005 is about 476.0865321228.

The spelling of 107909005 in words is "one hundred seven million, nine hundred nine thousand, five".

Divisors: 1 5 1061 5305 20341 101705 21581801 107909005