30105245 has 8 divisors (see below), whose sum is σ = 36184920. Its totient is φ = 24045120.

The previous prime is 30105209. The next prime is 30105307. The reversal of 30105245 is 54250103.

It can be written as a sum of positive squares in 4 ways, for example, as 1951609 + 28153636 = 1397^2 + 5306^2 .

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

It is not a de Polignac number, because 30105245 - 2⁸ = 30104989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250 + ... + 7859.

It is an arithmetic number, because the mean of its divisors is an integer number (4523115).

Almost surely, 2^30105245 is an apocalyptic number.

It is an amenable number.

30105245 is a deficient number, since it is larger than the sum of its proper divisors (6079675).

30105245 is an equidigital number, since it uses as much as digits as its factorization.

30105245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 30105245 is about 5486.8246737070. The cubic root of 30105245 is about 311.0861828335.

Adding to 30105245 its reverse (54250103), we get a palindrome (84355348).

The spelling of 30105245 in words is "thirty million, one hundred five thousand, two hundred forty-five".