30202493 has 4 divisors (see below), whose sum is σ = 30217308. Its totient is φ = 30187680.

The previous prime is 30202481. The next prime is 30202517. The reversal of 30202493 is 39420203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39420203 = 1373 ⋅28711.

It can be written as a sum of positive squares in 2 ways, for example, as 8421604 + 21780889 = 2902^2 + 4667^2 .

It is a cyclic number.

It is not a de Polignac number, because 30202493 - 2¹⁶ = 30136957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30202453) 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, 3746 + ... + 8627.

It is an arithmetic number, because the mean of its divisors is an integer number (7554327).

Almost surely, 2^30202493 is an apocalyptic number.

It is an amenable number.

30202493 is a deficient number, since it is larger than the sum of its proper divisors (14815).

30202493 is a wasteful number, since it uses less digits than its factorization.

30202493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14814.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30202493 is about 5495.6794848317. The cubic root of 30202493 is about 311.4207866860.

Adding to 30202493 its reverse (39420203), we get a palindrome (69622696).

The spelling of 30202493 in words is "thirty million, two hundred two thousand, four hundred ninety-three".