30205193 has 4 divisors (see below), whose sum is σ = 31794960. Its totient is φ = 28615428.

The previous prime is 30205171. The next prime is 30205199. The reversal of 30205193 is 39150203.

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 30205193 - 2¹⁸ = 29943049 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 (30205199) 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, 794855 + ... + 794892.

It is an arithmetic number, because the mean of its divisors is an integer number (7948740).

Almost surely, 2^30205193 is an apocalyptic number.

It is an amenable number.

30205193 is a deficient number, since it is larger than the sum of its proper divisors (1589767).

30205193 is a wasteful number, since it uses less digits than its factorization.

30205193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589766.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 30205193 is about 5495.9251268554. The cubic root of 30205193 is about 311.4300663954.

Adding to 30205193 its reverse (39150203), we get a palindrome (69355396).

The spelling of 30205193 in words is "thirty million, two hundred five thousand, one hundred ninety-three".