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38380215 = 3523532099
BaseRepresentation
bin1001001001101…
…0001010110111
32200012220202110
42102122022313
534311131330
63450342103
7644140446
oct222321267
980186673
1038380215
111a734695
1210a2a933
137c4a4b3
145150d5d
153581db0
hex249a2b7

38380215 has 32 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 19200896.

The previous prime is 38380207. The next prime is 38380217. The reversal of 38380215 is 51208383.

It is a happy number.

38380215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 38380215 - 23 = 38380207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38380217) 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 31 ways as a sum of consecutive naturals, for example, 17236 + ... + 19334.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 238380215 is an apocalyptic number.

38380215 is a deficient number, since it is larger than the sum of its proper divisors (26938185).

38380215 is a wasteful number, since it uses less digits than its factorization.

38380215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 38380215 is about 6195.1767529264. The cubic root of 38380215 is about 337.3151140996.

Adding to 38380215 its reverse (51208383), we get a palindrome (89588598).

The spelling of 38380215 in words is "thirty-eight million, three hundred eighty thousand, two hundred fifteen".

Divisors: 1 3 5 15 23 53 69 115 159 265 345 795 1219 2099 3657 6095 6297 10495 18285 31485 48277 111247 144831 241385 333741 556235 724155 1668705 2558681 7676043 12793405 38380215