30238813 has 16 divisors (see below), whose sum is σ = 35168256. Its totient is φ = 25725040.

The previous prime is 30238783. The next prime is 30238883. The reversal of 30238813 is 31883203.

It is not a de Polignac number, because 30238813 - 2⁹ = 30238301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30238883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10620 + ... + 13162.

It is an arithmetic number, because the mean of its divisors is an integer number (2198016).

Almost surely, 2^30238813 is an apocalyptic number.

It is an amenable number.

30238813 is a deficient number, since it is larger than the sum of its proper divisors (4929443).

30238813 is a wasteful number, since it uses less digits than its factorization.

30238813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30238813 is about 5498.9829059563. The cubic root of 30238813 is about 311.5455696751.

The spelling of 30238813 in words is "thirty million, two hundred thirty-eight thousand, eight hundred thirteen".