238047820 has 24 divisors (see below), whose sum is σ = 500343984. Its totient is φ = 95134656.

The previous prime is 238047779. The next prime is 238047833. The reversal of 238047820 is 28740832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21022 + ... + 30298.

It is an arithmetic number, because the mean of its divisors is an integer number (20847666).

Almost surely, 2^238047820 is an apocalyptic number.

238047820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238047820 is an abundant number, since it is smaller than the sum of its proper divisors (262296164).

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

238047820 is a wasteful number, since it uses less digits than its factorization.

238047820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10569 (or 10567 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 238047820 is about 15428.7983978014. The cubic root of 238047820 is about 619.7569460062.

The spelling of 238047820 in words is "two hundred thirty-eight million, forty-seven thousand, eight hundred twenty".