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38206019 = 131291649
BaseRepresentation
bin1001000110111…
…1101001000011
32122220001210202
42101233221003
534240043034
63442515415
7642513545
oct221575103
978801722
1038206019
111a625825
1210965b6b
137bb9117
145107695
15354a47e
hex246fa43

38206019 has 4 divisors (see below), whose sum is σ = 38497800. Its totient is φ = 37914240.

The previous prime is 38205991. The next prime is 38206033. The reversal of 38206019 is 91060283.

38206019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38206019 - 28 = 38205763 is a prime.

It is a super-2 number, since 2×382060192 = 2919399775656722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38205982 and 38206000.

It is not an unprimeable number, because it can be changed into a prime (38206319) 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 3 ways as a sum of consecutive naturals, for example, 145694 + ... + 145955.

It is an arithmetic number, because the mean of its divisors is an integer number (9624450).

Almost surely, 238206019 is an apocalyptic number.

38206019 is a deficient number, since it is larger than the sum of its proper divisors (291781).

38206019 is a wasteful number, since it uses less digits than its factorization.

38206019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291780.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 38206019 is about 6181.1017626310. The cubic root of 38206019 is about 336.8040168697.

The spelling of 38206019 in words is "thirty-eight million, two hundred six thousand, nineteen".

Divisors: 1 131 291649 38206019