238428107 has 2 divisors, whose sum is σ = 238428108. Its totient is φ = 238428106.

The previous prime is 238428089. The next prime is 238428121. The reversal of 238428107 is 701824832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238428107 - 2²⁶ = 171319243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238428137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119214053 + 119214054.

It is an arithmetic number, because the mean of its divisors is an integer number (119214054).

Almost surely, 2^238428107 is an apocalyptic number.

238428107 is a deficient number, since it is larger than the sum of its proper divisors (1).

238428107 is an equidigital number, since it uses as much as digits as its factorization.

238428107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 238428107 is about 15441.1174142288. The cubic root of 238428107 is about 620.0867958611.

The spelling of 238428107 in words is "two hundred thirty-eight million, four hundred twenty-eight thousand, one hundred seven".