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38086889 = 2910912049
BaseRepresentation
bin1001000101001…
…0100011101001
32122200000101112
42101102203221
534222240024
63440200105
7641506331
oct221224351
978600345
1038086889
111a554275
1210909035
137b76b29
1450b60c1
15352500e
hex24528e9

38086889 has 8 divisors (see below), whose sum is σ = 39765000. Its totient is φ = 36433152.

The previous prime is 38086883. The next prime is 38086891. The reversal of 38086889 is 98868083.

It can be written as a sum of positive squares in 4 ways, for example, as 12250000 + 25836889 = 3500^2 + 5083^2 .

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 38086889 - 216 = 38021353 is a prime.

It is a super-2 number, since 2×380868892 = 2901222227396642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38086883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2864 + ... + 9185.

It is an arithmetic number, because the mean of its divisors is an integer number (4970625).

Almost surely, 238086889 is an apocalyptic number.

It is an amenable number.

38086889 is a deficient number, since it is larger than the sum of its proper divisors (1678111).

38086889 is a wasteful number, since it uses less digits than its factorization.

38086889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12187.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 38086889 is about 6171.4576074052. The cubic root of 38086889 is about 336.4535900793.

The spelling of 38086889 in words is "thirty-eight million, eighty-six thousand, eight hundred eighty-nine".

Divisors: 1 29 109 3161 12049 349421 1313341 38086889