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395281 = 3141311
BaseRepresentation
bin1100000100000010001
3202002020001
41200200101
5100122111
612250001
73234265
oct1404021
9662201
10395281
1124aa87
12170901
1310abc3
14a40a5
157c1c1
hex60811

395281 has 8 divisors (see below), whose sum is σ = 419328. Its totient is φ = 372000.

The previous prime is 395273. The next prime is 395287. The reversal of 395281 is 182593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 395281 - 23 = 395273 is a prime.

It is a super-2 number, since 2×3952812 = 312494137922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2395281 is an apocalyptic number.

395281 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

395281 is a deficient number, since it is larger than the sum of its proper divisors (24047).

395281 is a wasteful number, since it uses less digits than its factorization.

395281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383.

The product of its digits is 2160, while the sum is 28.

The square root of 395281 is about 628.7137663516. The cubic root of 395281 is about 73.3897339299.

It can be divided in two parts, 395 and 281, that added together give a palindrome (676).

The spelling of 395281 in words is "three hundred ninety-five thousand, two hundred eighty-one".

Divisors: 1 31 41 311 1271 9641 12751 395281