238818340 has 24 divisors (see below), whose sum is σ = 501822720. Its totient is φ = 95469408.

The previous prime is 238818337. The next prime is 238818347. The reversal of 238818340 is 43818832.

It is a self number, because there is not a number n which added to its sum of digits gives 238818340.

It is not an unprimeable number, because it can be changed into a prime (238818347) by changing a digit.

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, 48429 + ... + 53131.

It is an arithmetic number, because the mean of its divisors is an integer number (20909280).

Almost surely, 2^238818340 is an apocalyptic number.

238818340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238818340 is an abundant number, since it is smaller than the sum of its proper divisors (263004380).

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

238818340 is a wasteful number, since it uses less digits than its factorization.

238818340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251 (or 7249 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 238818340 is about 15453.7484126020. The cubic root of 238818340 is about 620.4249081737.

The spelling of 238818340 in words is "two hundred thirty-eight million, eight hundred eighteen thousand, three hundred forty".