30140345 has 4 divisors (see below), whose sum is σ = 36168420. Its totient is φ = 24112272.

The previous prime is 30140333. The next prime is 30140347. The reversal of 30140345 is 54304103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11641744 + 18498601 = 3412^2 + 4301^2 .

It is a cyclic number.

It is not a de Polignac number, because 30140345 - 2⁴ = 30140329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30140347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014030 + ... + 3014039.

It is an arithmetic number, because the mean of its divisors is an integer number (9042105).

Almost surely, 2^30140345 is an apocalyptic number.

It is an amenable number.

30140345 is a deficient number, since it is larger than the sum of its proper divisors (6028075).

30140345 is an equidigital number, since it uses as much as digits as its factorization.

30140345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028074.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30140345 is about 5490.0223132516. The cubic root of 30140345 is about 311.2070353538.

Adding to 30140345 its reverse (54304103), we get a palindrome (84444448).

The spelling of 30140345 in words is "thirty million, one hundred forty thousand, three hundred forty-five".