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386768017 = 3221120077
BaseRepresentation
bin10111000011011…
…001110010010001
3222221202211222101
4113003121302101
51243003034032
6102213440401
712404321356
oct2703316221
9887684871
10386768017
11189358599
12a9640101
136218a91c
143951c62d
1523e4cde7
hex170d9c91

386768017 has 4 divisors (see below), whose sum is σ = 386891316. Its totient is φ = 386644720.

The previous prime is 386767991. The next prime is 386768033. The reversal of 386768017 is 710867683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710867683 = 1514707733.

It can be written as a sum of positive squares in 2 ways, for example, as 352087696 + 34680321 = 18764^2 + 5889^2 .

It is a cyclic number.

It is not a de Polignac number, because 386768017 - 27 = 386767889 is a prime.

It is a super-2 number, since 2×3867680172 = 299178997948224578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386762017) 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, 56818 + ... + 63259.

It is an arithmetic number, because the mean of its divisors is an integer number (96722829).

Almost surely, 2386768017 is an apocalyptic number.

It is an amenable number.

386768017 is a deficient number, since it is larger than the sum of its proper divisors (123299).

386768017 is a wasteful number, since it uses less digits than its factorization.

386768017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123298.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 386768017 is about 19666.4185097338. The cubic root of 386768017 is about 728.5905229814.

The spelling of 386768017 in words is "three hundred eighty-six million, seven hundred sixty-eight thousand, seventeen".

Divisors: 1 3221 120077 386768017