30145793 has 4 divisors (see below), whose sum is σ = 30218160. Its totient is φ = 30073428.

The previous prime is 30145763. The next prime is 30145807. The reversal of 30145793 is 39754103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30145793 - 2⁶ = 30145729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30145763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35555 + ... + 36392.

It is an arithmetic number, because the mean of its divisors is an integer number (7554540).

Almost surely, 2^30145793 is an apocalyptic number.

It is an amenable number.

30145793 is a deficient number, since it is larger than the sum of its proper divisors (72367).

30145793 is an equidigital number, since it uses as much as digits as its factorization.

30145793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72366.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 30145793 is about 5490.5184636790. The cubic root of 30145793 is about 311.2257849045.

Adding to 30145793 its reverse (39754103), we get a palindrome (69899896).

The spelling of 30145793 in words is "thirty million, one hundred forty-five thousand, seven hundred ninety-three".