30307245 has 16 divisors (see below), whose sum is σ = 49524480. Its totient is φ = 15819584.

The previous prime is 30307229. The next prime is 30307247. The reversal of 30307245 is 54270303.

It is a cyclic number.

It is not a de Polignac number, because 30307245 - 2⁴ = 30307229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30307247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20790 + ... + 22199.

It is an arithmetic number, because the mean of its divisors is an integer number (3095280).

Almost surely, 2^30307245 is an apocalyptic number.

It is an amenable number.

30307245 is a deficient number, since it is larger than the sum of its proper divisors (19217235).

30307245 is a wasteful number, since it uses less digits than its factorization.

30307245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43044.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 30307245 is about 5505.2016311848. The cubic root of 30307245 is about 311.7804072010.

Adding to 30307245 its reverse (54270303), we get a palindrome (84577548).

The spelling of 30307245 in words is "thirty million, three hundred seven thousand, two hundred forty-five".