238986240 has 88 divisors (see below), whose sum is σ = 764431680. Its totient is φ = 63725568.

The previous prime is 238986239. The next prime is 238986269. The reversal of 238986240 is 42689832.

It is a super-2 number, since 2×238986240² = 114228845818675200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238986192 and 238986201.

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, 7581 + ... + 23139.

Almost surely, 2^238986240 is an apocalyptic number.

238986240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238986240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382215840).

238986240 is an abundant number, since it is smaller than the sum of its proper divisors (525445440).

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

238986240 is a wasteful number, since it uses less digits than its factorization.

238986240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587 (or 15569 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 238986240 is about 15459.1797971302. The cubic root of 238986240 is about 620.5702696225.

The spelling of 238986240 in words is "two hundred thirty-eight million, nine hundred eighty-six thousand, two hundred forty".