30204253 has 4 divisors (see below), whose sum is σ = 30424860. Its totient is φ = 29983648.

The previous prime is 30204233. The next prime is 30204263. The reversal of 30204253 is 35240203.

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 6749604 + 23454649 = 2598^2 + 4843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30204253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30204253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30204233) 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, 110098 + ... + 110371.

It is an arithmetic number, because the mean of its divisors is an integer number (7606215).

Almost surely, 2^30204253 is an apocalyptic number.

It is an amenable number.

30204253 is a deficient number, since it is larger than the sum of its proper divisors (220607).

30204253 is a wasteful number, since it uses less digits than its factorization.

30204253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220606.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30204253 is about 5495.8396082855. The cubic root of 30204253 is about 311.4268357445.

Adding to 30204253 its reverse (35240203), we get a palindrome (65444456).

The spelling of 30204253 in words is "thirty million, two hundred four thousand, two hundred fifty-three".