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38000065 = 57600013
BaseRepresentation
bin1001000011110…
…1010111000001
32122111121021211
42100331113001
534212000230
63434250121
7640665235
oct220752701
978447254
1038000065
111a4a5014
1210886941
137b4645c
1450925c5
15350942a
hex243d5c1

38000065 has 4 divisors (see below), whose sum is σ = 45600084. Its totient is φ = 30400048.

The previous prime is 38000059. The next prime is 38000069. The reversal of 38000065 is 56000083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56000083 = 72777029.

It can be written as a sum of positive squares in 2 ways, for example, as 23590449 + 14409616 = 4857^2 + 3796^2 .

It is a cyclic number.

It is not a de Polignac number, because 38000065 - 213 = 37991873 is a prime.

It is a Smith number, since the sum of its digits (22) 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 not an unprimeable number, because it can be changed into a prime (38000069) 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, 3800002 + ... + 3800011.

It is an arithmetic number, because the mean of its divisors is an integer number (11400021).

Almost surely, 238000065 is an apocalyptic number.

It is an amenable number.

38000065 is a deficient number, since it is larger than the sum of its proper divisors (7600019).

38000065 is an equidigital number, since it uses as much as digits as its factorization.

38000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600018.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 38000065 is about 6164.4192751629. The cubic root of 38000065 is about 336.1977323714.

The spelling of 38000065 in words is "thirty-eight million, sixty-five", and thus it is an aban number and an uban number.

Divisors: 1 5 7600013 38000065