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38205285 = 354359233
BaseRepresentation
bin1001000110111…
…1011101100101
32122220000210120
42101233131211
534240032120
63442512153
7642511446
oct221573545
978800716
1038205285
111a625218
1210965659
137bb89a1
1451072cd
15354a140
hex246f765

38205285 has 16 divisors (see below), whose sum is σ = 62551104. Its totient is φ = 19901952.

The previous prime is 38205259. The next prime is 38205289. The reversal of 38205285 is 58250283.

It is not a de Polignac number, because 38205285 - 25 = 38205253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38205289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28972 + ... + 30261.

It is an arithmetic number, because the mean of its divisors is an integer number (3909444).

Almost surely, 238205285 is an apocalyptic number.

It is an amenable number.

38205285 is a deficient number, since it is larger than the sum of its proper divisors (24345819).

38205285 is a wasteful number, since it uses less digits than its factorization.

38205285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59284.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 38205285 is about 6181.0423878178. The cubic root of 38205285 is about 336.8018600042.

The spelling of 38205285 in words is "thirty-eight million, two hundred five thousand, two hundred eighty-five".

Divisors: 1 3 5 15 43 129 215 645 59233 177699 296165 888495 2547019 7641057 12735095 38205285