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38007861 = 341309007
BaseRepresentation
bin1001000011111…
…1010000110101
32122111222222120
42100333100311
534212222421
63434350153
7641030043
oct220772065
978458876
1038007861
111a4aa961
121088b359
137b49b78
145095393
15350b8c6
hex243f435

38007861 has 8 divisors (see below), whose sum is σ = 51913344. Its totient is φ = 24720480.

The previous prime is 38007857. The next prime is 38007877. The reversal of 38007861 is 16870083.

38007861 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 not a de Polignac number, because 38007861 - 22 = 38007857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38007811) 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, 154381 + ... + 154626.

It is an arithmetic number, because the mean of its divisors is an integer number (6489168).

Almost surely, 238007861 is an apocalyptic number.

It is an amenable number.

38007861 is a deficient number, since it is larger than the sum of its proper divisors (13905483).

38007861 is a wasteful number, since it uses less digits than its factorization.

38007861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309051.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 38007861 is about 6165.0515812927. The cubic root of 38007861 is about 336.2207219663.

The spelling of 38007861 in words is "thirty-eight million, seven thousand, eight hundred sixty-one".

Divisors: 1 3 41 123 309007 927021 12669287 38007861