238858820 has 12 divisors (see below), whose sum is σ = 501603564. Its totient is φ = 95543520.

The previous prime is 238858799. The next prime is 238858831. The reversal of 238858820 is 28858832.

It can be written as a sum of positive squares in 2 ways, for example, as 165276736 + 73582084 = 12856^2 + 8578^2 .

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 3 ways as a sum of consecutive naturals, for example, 5971451 + ... + 5971490.

It is an arithmetic number, because the mean of its divisors is an integer number (41800297).

Almost surely, 2^238858820 is an apocalyptic number.

238858820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238858820 is an abundant number, since it is smaller than the sum of its proper divisors (262744744).

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

238858820 is a wasteful number, since it uses less digits than its factorization.

238858820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942950 (or 11942948 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 238858820 is about 15455.0580717123. The cubic root of 238858820 is about 620.4599604530.

The spelling of 238858820 in words is "two hundred thirty-eight million, eight hundred fifty-eight thousand, eight hundred twenty".