30712245 has 16 divisors (see below), whose sum is σ = 51276672. Its totient is φ = 15667520.

The previous prime is 30712223. The next prime is 30712259. The reversal of 30712245 is 54221703.

It is not a de Polignac number, because 30712245 - 2⁷ = 30712117 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44166 + ... + 44855.

It is an arithmetic number, because the mean of its divisors is an integer number (3204792).

Almost surely, 2^30712245 is an apocalyptic number.

It is an amenable number.

30712245 is a deficient number, since it is larger than the sum of its proper divisors (20564427).

30712245 is a wasteful number, since it uses less digits than its factorization.

30712245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89052.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 30712245 is about 5541.8629539172. The cubic root of 30712245 is about 313.1630550838.

Adding to 30712245 its reverse (54221703), we get a palindrome (84933948).

The spelling of 30712245 in words is "thirty million, seven hundred twelve thousand, two hundred forty-five".