238983820 has 12 divisors (see below), whose sum is σ = 501866064. Its totient is φ = 95593520.

The previous prime is 238983817. The next prime is 238983827. The reversal of 238983820 is 28389832.

It is a super-2 number, since 2×238983820² = 114226532443584800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238983827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5974576 + ... + 5974615.

It is an arithmetic number, because the mean of its divisors is an integer number (41822172).

Almost surely, 2^238983820 is an apocalyptic number.

238983820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238983820 is an abundant number, since it is smaller than the sum of its proper divisors (262882244).

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

238983820 is a wasteful number, since it uses less digits than its factorization.

238983820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11949200 (or 11949198 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 238983820 is about 15459.1015262854. The cubic root of 238983820 is about 620.5681749620.

The spelling of 238983820 in words is "two hundred thirty-eight million, nine hundred eighty-three thousand, eight hundred twenty".