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38811005 = 523337487
BaseRepresentation
bin1001010000001…
…1010101111101
32201000210200122
42110003111331
534413423010
63503504325
7650613422
oct224032575
981023618
1038811005
111a9a9312
1210bb80a5
13806b5bc
145223d49
153619855
hex250357d

38811005 has 8 divisors (see below), whose sum is σ = 48598272. Its totient is φ = 29698768.

The previous prime is 38811001. The next prime is 38811029. The reversal of 38811005 is 50011883.

38811005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 38811005 - 22 = 38811001 is a prime.

It is a super-2 number, since 2×388110052 = 3012588218220050, which contains 22 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 (38811001) 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 7 ways as a sum of consecutive naturals, for example, 168629 + ... + 168858.

It is an arithmetic number, because the mean of its divisors is an integer number (6074784).

Almost surely, 238811005 is an apocalyptic number.

It is an amenable number.

38811005 is a deficient number, since it is larger than the sum of its proper divisors (9787267).

38811005 is a wasteful number, since it uses less digits than its factorization.

38811005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337515.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 38811005 is about 6229.8479114662. The cubic root of 38811005 is about 338.5724604457.

Adding to 38811005 its reverse (50011883), we get a palindrome (88822888).

The spelling of 38811005 in words is "thirty-eight million, eight hundred eleven thousand, five".

Divisors: 1 5 23 115 337487 1687435 7762201 38811005