238428113 has 16 divisors (see below), whose sum is σ = 297638016. Its totient is φ = 185552640.

The previous prime is 238428107. The next prime is 238428121. The reversal of 238428113 is 311824832.

It is not a de Polignac number, because 238428113 - 2⁶ = 238428049 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 238428113.

It is not an unprimeable number, because it can be changed into a prime (238428193) 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, 82745 + ... + 85577.

It is an arithmetic number, because the mean of its divisors is an integer number (18602376).

Almost surely, 2^238428113 is an apocalyptic number.

It is an amenable number.

238428113 is a deficient number, since it is larger than the sum of its proper divisors (59209903).

238428113 is a wasteful number, since it uses less digits than its factorization.

238428113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its digits is 9216, while the sum is 32.

The square root of 238428113 is about 15441.1176085153. The cubic root of 238428113 is about 620.0868010625.

The spelling of 238428113 in words is "two hundred thirty-eight million, four hundred twenty-eight thousand, one hundred thirteen".