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1395385 = 51491873
BaseRepresentation
bin101010100101010111001
32121220002221
411110222321
5324123020
645524041
714601115
oct5245271
92556087
101395385
11873412
12573621
1339b194
14284745
151c86aa
hex154ab9

1395385 has 8 divisors (see below), whose sum is σ = 1686600. Its totient is φ = 1108224.

The previous prime is 1395367. The next prime is 1395413. The reversal of 1395385 is 5835931.

It can be written as a sum of positive squares in 4 ways, for example, as 59049 + 1336336 = 243^2 + 1156^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1395385 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1395385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 1681.

It is an arithmetic number, because the mean of its divisors is an integer number (210825).

21395385 is an apocalyptic number.

It is an amenable number.

1395385 is a deficient number, since it is larger than the sum of its proper divisors (291215).

1395385 is a wasteful number, since it uses less digits than its factorization.

1395385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027.

The product of its digits is 16200, while the sum is 34.

The square root of 1395385 is about 1181.2641533544. The cubic root of 1395385 is about 111.7458362853.

The spelling of 1395385 in words is "one million, three hundred ninety-five thousand, three hundred eighty-five".

Divisors: 1 5 149 745 1873 9365 279077 1395385