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386061385 = 577212277
BaseRepresentation
bin10111000000101…
…101010001001001
3222220102221122211
4113000231101021
51242312431020
6102150345121
712365316253
oct2700552111
9886387584
10386061385
11188a156a6
12a935b1a1
1361ca10b8
14393b6cd3
1523d5d85a
hex1702d449

386061385 has 4 divisors (see below), whose sum is σ = 463273668. Its totient is φ = 308849104.

The previous prime is 386061359. The next prime is 386061413. The reversal of 386061385 is 583160683.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101666889 + 284394496 = 10083^2 + 16864^2 .

It is a cyclic number.

It is not a de Polignac number, because 386061385 - 213 = 386053193 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38606134 + ... + 38606143.

It is an arithmetic number, because the mean of its divisors is an integer number (115818417).

Almost surely, 2386061385 is an apocalyptic number.

It is an amenable number.

386061385 is a deficient number, since it is larger than the sum of its proper divisors (77212283).

386061385 is an equidigital number, since it uses as much as digits as its factorization.

386061385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77212282.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 386061385 is about 19648.4448494022. Note that the first 3 decimals coincide. The cubic root of 386061385 is about 728.1465365620.

The spelling of 386061385 in words is "three hundred eighty-six million, sixty-one thousand, three hundred eighty-five".

Divisors: 1 5 77212277 386061385