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1304705 = 5260941
BaseRepresentation
bin100111110100010000001
32110021201102
410332202001
5313222310
643544145
714042543
oct4764201
92407642
101304705
11811276
1252b055
13368b1c
1425d693
151ab8a5
hex13e881

1304705 has 4 divisors (see below), whose sum is σ = 1565652. Its totient is φ = 1043760.

The previous prime is 1304687. The next prime is 1304707. The reversal of 1304705 is 5074031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5074031 = 12739953.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 322624 = 991^2 + 568^2 .

It is not a de Polignac number, because 1304705 - 212 = 1300609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304707) 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, 130466 + ... + 130475.

It is an arithmetic number, because the mean of its divisors is an integer number (391413).

21304705 is an apocalyptic number.

It is an amenable number.

1304705 is a deficient number, since it is larger than the sum of its proper divisors (260947).

1304705 is an equidigital number, since it uses as much as digits as its factorization.

1304705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260946.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 1304705 is about 1142.2368405896. The cubic root of 1304705 is about 109.2707965374.

Adding to 1304705 its reverse (5074031), we get a palindrome (6378736).

The spelling of 1304705 in words is "one million, three hundred four thousand, seven hundred five".

Divisors: 1 5 260941 1304705