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38000489 = 229165941
BaseRepresentation
bin1001000011110…
…1011101101001
32122111121212112
42100331131221
534212003424
63434252105
7640666412
oct220753551
978447775
1038000489
111a4a536a
1210887035
137b466c7
145092809
15350960e
hex243d769

38000489 has 4 divisors (see below), whose sum is σ = 38166660. Its totient is φ = 37834320.

The previous prime is 38000477. The next prime is 38000497. The reversal of 38000489 is 98400083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98400083 = 409240587.

It can be written as a sum of positive squares in 2 ways, for example, as 22657600 + 15342889 = 4760^2 + 3917^2 .

It is a cyclic number.

It is not a de Polignac number, because 38000489 - 28 = 38000233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38000449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82742 + ... + 83199.

It is an arithmetic number, because the mean of its divisors is an integer number (9541665).

Almost surely, 238000489 is an apocalyptic number.

It is an amenable number.

38000489 is a deficient number, since it is larger than the sum of its proper divisors (166171).

38000489 is a wasteful number, since it uses less digits than its factorization.

38000489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166170.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 38000489 is about 6164.4536659788. The cubic root of 38000489 is about 336.1989827842.

The spelling of 38000489 in words is "thirty-eight million, four hundred eighty-nine", and thus it is an aban number.

Divisors: 1 229 165941 38000489