30280245 has 16 divisors (see below), whose sum is σ = 49758720. Its totient is φ = 15712704.

The previous prime is 30280241. The next prime is 30280253. The reversal of 30280245 is 54208203.

It is not a de Polignac number, because 30280245 - 2² = 30280241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280241) 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, 26725 + ... + 27834.

It is an arithmetic number, because the mean of its divisors is an integer number (3109920).

Almost surely, 2^30280245 is an apocalyptic number.

It is an amenable number.

30280245 is a deficient number, since it is larger than the sum of its proper divisors (19478475).

30280245 is a wasteful number, since it uses less digits than its factorization.

30280245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54604.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 30280245 is about 5502.7488585252. The cubic root of 30280245 is about 311.6877937896.

Adding to 30280245 its reverse (54208203), we get a palindrome (84488448).

The spelling of 30280245 in words is "thirty million, two hundred eighty thousand, two hundred forty-five".