238847820 has 48 divisors (see below), whose sum is σ = 670477920. Its totient is φ = 63530496.

The previous prime is 238847813. The next prime is 238847821. The reversal of 238847820 is 28748832.

238847820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×238847820² = 114096562237504800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238847821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19674 + ... + 29406.

It is an arithmetic number, because the mean of its divisors is an integer number (13968290).

Almost surely, 2^238847820 is an apocalyptic number.

238847820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238847820 is an abundant number, since it is smaller than the sum of its proper divisors (431630100).

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

238847820 is a wasteful number, since it uses less digits than its factorization.

238847820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10154 (or 10152 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 238847820 is about 15454.7021970661. The cubic root of 238847820 is about 620.4504357690.

The spelling of 238847820 in words is "two hundred thirty-eight million, eight hundred forty-seven thousand, eight hundred twenty".