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38238005 = 513588277
BaseRepresentation
bin1001000111011…
…1011100110101
32122221200200102
42101313130311
534242104010
63443323445
7643006031
oct221673465
978850612
1038238005
111a647863
1210980585
137bca850
1451151c1
153554ba5
hex2477735

38238005 has 8 divisors (see below), whose sum is σ = 49415352. Its totient is φ = 28237248.

The previous prime is 38238001. The next prime is 38238023. The reversal of 38238005 is 50083283.

It can be written as a sum of positive squares in 4 ways, for example, as 7789681 + 30448324 = 2791^2 + 5518^2 .

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

It is not a de Polignac number, because 38238005 - 22 = 38238001 is a prime.

It is a super-3 number, since 3×382380053 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38238001) 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, 294074 + ... + 294203.

It is an arithmetic number, because the mean of its divisors is an integer number (6176919).

Almost surely, 238238005 is an apocalyptic number.

It is an amenable number.

38238005 is a deficient number, since it is larger than the sum of its proper divisors (11177347).

38238005 is a wasteful number, since it uses less digits than its factorization.

38238005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588295.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 38238005 is about 6183.6886241143. The cubic root of 38238005 is about 336.8979811942.

The spelling of 38238005 in words is "thirty-eight million, two hundred thirty-eight thousand, five".

Divisors: 1 5 13 65 588277 2941385 7647601 38238005