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38490235 = 572157103
BaseRepresentation
bin1001001011010…
…1000001111011
32200102111200021
42102311001323
534323141420
63452551311
7645106300
oct222650173
980374607
1038490235
111a7aa313
1210a82537
137c885b4
14517d0a7
1535a47aa
hex24b507b

38490235 has 12 divisors (see below), whose sum is σ = 53729568. Its totient is φ = 26393136.

The previous prime is 38490223. The next prime is 38490239. The reversal of 38490235 is 53209483.

It is a happy number.

38490235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38490235 - 27 = 38490107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38490235.

It is not an unprimeable number, because it can be changed into a prime (38490239) 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 11 ways as a sum of consecutive naturals, for example, 78307 + ... + 78796.

It is an arithmetic number, because the mean of its divisors is an integer number (4477464).

Almost surely, 238490235 is an apocalyptic number.

38490235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38490235 is a deficient number, since it is larger than the sum of its proper divisors (15239333).

38490235 is a wasteful number, since it uses less digits than its factorization.

38490235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157122 (or 157115 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 38490235 is about 6204.0498869690. The cubic root of 38490235 is about 337.6371203231.

The spelling of 38490235 in words is "thirty-eight million, four hundred ninety thousand, two hundred thirty-five".

Divisors: 1 5 7 35 49 245 157103 785515 1099721 5498605 7698047 38490235