30238493 has 4 divisors (see below), whose sum is σ = 30734268. Its totient is φ = 29742720.

The previous prime is 30238487. The next prime is 30238513. The reversal of 30238493 is 39483203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39483203 = 23 ⋅1716661.

It can be written as a sum of positive squares in 2 ways, for example, as 4401604 + 25836889 = 2098^2 + 5083^2 .

It is a cyclic number.

It is not a de Polignac number, because 30238493 - 2¹⁴ = 30222109 is a prime.

It is a super-2 number, since 2×30238493² = 1828732917822098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30238433) 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, 247796 + ... + 247917.

It is an arithmetic number, because the mean of its divisors is an integer number (7683567).

Almost surely, 2^30238493 is an apocalyptic number.

It is an amenable number.

30238493 is a deficient number, since it is larger than the sum of its proper divisors (495775).

30238493 is an equidigital number, since it uses as much as digits as its factorization.

30238493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495774.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 30238493 is about 5498.9538095896. The cubic root of 30238493 is about 311.5444707019.

The spelling of 30238493 in words is "thirty million, two hundred thirty-eight thousand, four hundred ninety-three".