30145293 has 12 divisors (see below), whose sum is σ = 43636320. Its totient is φ = 20053896.

The previous prime is 30145289. The next prime is 30145303. The reversal of 30145293 is 39254103.

It is not a de Polignac number, because 30145293 - 2² = 30145289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1198 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (3636360).

Almost surely, 2^30145293 is an apocalyptic number.

It is an amenable number.

30145293 is a deficient number, since it is larger than the sum of its proper divisors (13491027).

30145293 is a wasteful number, since it uses less digits than its factorization.

30145293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7168 (or 7165 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30145293 is about 5490.4729304496. The cubic root of 30145293 is about 311.2240642249.

Adding to 30145293 its reverse (39254103), we get a palindrome (69399396).

The spelling of 30145293 in words is "thirty million, one hundred forty-five thousand, two hundred ninety-three".