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30365 = 56073

30365 has 4 divisors (see below), whose sum is σ = 36444. Its totient is φ = 24288.

The previous prime is 30347. The next prime is 30367. The reversal of 30365 is 56303.

It is a happy number.

30365 is nontrivially palindromic in base 4.

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 20164 + 10201 = 142^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 30365 - 28 = 30109 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30365.

It is not an unprimeable number, because it can be changed into a prime (30367) 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, 3032 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (9111).

230365 is an apocalyptic number.

It is an amenable number.

30365 is a deficient number, since it is larger than the sum of its proper divisors (6079).

30365 is an equidigital number, since it uses as much as digits as its factorization.

30365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30365 is about 174.2555594522. The cubic root of 30365 is about 31.1978329637.

Adding to 30365 its reverse (56303), we get a palindrome (86668).

The spelling of 30365 in words is "thirty thousand, three hundred sixty-five".

Divisors: 1 5 6073 30365