238235820 has 48 divisors (see below), whose sum is σ = 670776288. Its totient is φ = 63175680.

The previous prime is 238235801. The next prime is 238235831. The reversal of 238235820 is 28532832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109 + ... + 21828.

It is an arithmetic number, because the mean of its divisors is an integer number (13974506).

Almost surely, 2^238235820 is an apocalyptic number.

238235820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238235820 is an abundant number, since it is smaller than the sum of its proper divisors (432540468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238235820 is a wasteful number, since it uses less digits than its factorization.

238235820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130 (or 22128 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 238235820 is about 15434.8896983425. The cubic root of 238235820 is about 619.9200555958.

The spelling of 238235820 in words is "two hundred thirty-eight million, two hundred thirty-five thousand, eight hundred twenty".