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38806069 = 83467543
BaseRepresentation
bin1001010000001…
…0001000110101
32201000112220211
42110002020311
534413243234
63503425421
7650563141
oct224021065
981015824
1038806069
111a9a5635
1210bb5271
138069293
145222221
153618164
hex2502235

38806069 has 4 divisors (see below), whose sum is σ = 39273696. Its totient is φ = 38338444.

The previous prime is 38806063. The next prime is 38806099. The reversal of 38806069 is 96060883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96060883 = 111785999.

It is a cyclic number.

It is not a de Polignac number, because 38806069 - 27 = 38805941 is a prime.

It is a super-2 number, since 2×388060692 = 3011821982465522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38806063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233689 + ... + 233854.

It is an arithmetic number, because the mean of its divisors is an integer number (9818424).

Almost surely, 238806069 is an apocalyptic number.

It is an amenable number.

38806069 is a deficient number, since it is larger than the sum of its proper divisors (467627).

38806069 is an equidigital number, since it uses as much as digits as its factorization.

38806069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467626.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 38806069 is about 6229.4517415259. The cubic root of 38806069 is about 338.5581065744.

It can be divided in two parts, 388060 and 69, that added together give a square (388129 = 6232).

The spelling of 38806069 in words is "thirty-eight million, eight hundred six thousand, sixty-nine".

Divisors: 1 83 467543 38806069