238480640 has 72 divisors (see below), whose sum is σ = 574592928. Its totient is φ = 94832640.

The previous prime is 238480639. The next prime is 238480661. The reversal of 238480640 is 46084832.

It is a self number, because there is not a number n which added to its sum of digits gives 238480640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269639 + ... + 270521.

Almost surely, 2^238480640 is an apocalyptic number.

238480640 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 238480640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287296464).

238480640 is an abundant number, since it is smaller than the sum of its proper divisors (336112288).

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

238480640 is an equidigital number, since it uses as much as digits as its factorization.

238480640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 238480640 is about 15442.8183956168. The cubic root of 238480640 is about 620.1323338752.

The spelling of 238480640 in words is "two hundred thirty-eight million, four hundred eighty thousand, six hundred forty".