238428105 has 8 divisors (see below), whose sum is σ = 381484992. Its totient is φ = 127161648.

The previous prime is 238428089. The next prime is 238428107. The reversal of 238428105 is 501824832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238428105 - 2⁴ = 238428089 is a prime.

It is a super-2 number, since 2×238428105² = 113695922507782050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238428107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947589 + ... + 7947618.

It is an arithmetic number, because the mean of its divisors is an integer number (47685624).

Almost surely, 2^238428105 is an apocalyptic number.

It is an amenable number.

238428105 is a deficient number, since it is larger than the sum of its proper divisors (143056887).

238428105 is a wasteful number, since it uses less digits than its factorization.

238428105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15895215.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 238428105 is about 15441.1173494667. The cubic root of 238428105 is about 620.0867941273.

The spelling of 238428105 in words is "two hundred thirty-eight million, four hundred twenty-eight thousand, one hundred five".