30045205 has 8 divisors (see below), whose sum is σ = 38175192. Its totient is φ = 22622208.

The previous prime is 30045181. The next prime is 30045209. The reversal of 30045205 is 50254003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 603729 + 29441476 = 777^2 + 5426^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30045205 - 2⁷ = 30045077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30045209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176652 + ... + 176821.

It is an arithmetic number, because the mean of its divisors is an integer number (4771899).

Almost surely, 2^30045205 is an apocalyptic number.

It is an amenable number.

30045205 is a deficient number, since it is larger than the sum of its proper divisors (8129987).

30045205 is a wasteful number, since it uses less digits than its factorization.

30045205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353495.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 30045205 is about 5481.3506547201. The cubic root of 30045205 is about 310.8792416546.

Adding to 30045205 its reverse (50254003), we get a palindrome (80299208).

The spelling of 30045205 in words is "thirty million, forty-five thousand, two hundred five".