238386021 has 8 divisors (see below), whose sum is σ = 324610944. Its totient is φ = 155542560.

The previous prime is 238385999. The next prime is 238386037. The reversal of 238386021 is 120683832.

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

It is not a de Polignac number, because 238386021 - 2⁷ = 238385893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238386091) 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 in 7 ways as a sum of consecutive naturals, for example, 845200 + ... + 845481.

It is an arithmetic number, because the mean of its divisors is an integer number (40576368).

Almost surely, 2^238386021 is an apocalyptic number.

It is an amenable number.

238386021 is a deficient number, since it is larger than the sum of its proper divisors (86224923).

238386021 is a wasteful number, since it uses less digits than its factorization.

238386021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690731.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 238386021 is about 15439.7545641114. The cubic root of 238386021 is about 620.0503089596.

The spelling of 238386021 in words is "two hundred thirty-eight million, three hundred eighty-six thousand, twenty-one".