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38808569 = 1710972081
BaseRepresentation
bin1001010000001…
…0101111111001
32201000200100102
42110002233321
534413333234
63503445145
7650603342
oct224025771
981020312
1038808569
111a9a74a8
1210bb67b5
13806a467
1452230c9
153618c7e
hex2502bf9

38808569 has 8 divisors (see below), whose sum is σ = 41148648. Its totient is φ = 36474880.

The previous prime is 38808563. The next prime is 38808577. The reversal of 38808569 is 96580883.

38808569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5017600 + 33790969 = 2240^2 + 5813^2 .

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 38808569 - 28 = 38808313 is a prime.

It is a super-2 number, since 2×388085692 = 3012210055655522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38808563) 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 7 ways as a sum of consecutive naturals, for example, 17609 + ... + 19689.

It is an arithmetic number, because the mean of its divisors is an integer number (5143581).

Almost surely, 238808569 is an apocalyptic number.

It is an amenable number.

38808569 is a deficient number, since it is larger than the sum of its proper divisors (2340079).

38808569 is a wasteful number, since it uses less digits than its factorization.

38808569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 38808569 is about 6229.6523980075. The cubic root of 38808569 is about 338.5653767181.

The spelling of 38808569 in words is "thirty-eight million, eight hundred eight thousand, five hundred sixty-nine".

Divisors: 1 17 1097 2081 18649 35377 2282857 38808569