238489540 has 48 divisors (see below), whose sum is σ = 510209280. Its totient is φ = 93623040.

The previous prime is 238489529. The next prime is 238489543. The reversal of 238489540 is 45984832.

It is not an unprimeable number, because it can be changed into a prime (238489543) 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, 553125 + ... + 553555.

It is an arithmetic number, because the mean of its divisors is an integer number (10629360).

Almost surely, 2^238489540 is an apocalyptic number.

238489540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238489540 is an abundant number, since it is smaller than the sum of its proper divisors (271719740).

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

238489540 is a wasteful number, since it uses less digits than its factorization.

238489540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 238489540 is about 15443.1065527633. The cubic root of 238489540 is about 620.1400481410.

The spelling of 238489540 in words is "two hundred thirty-eight million, four hundred eighty-nine thousand, five hundred forty".