238643244 has 36 divisors (see below), whose sum is σ = 689414544. Its totient is φ = 68183712.

The previous prime is 238643243. The next prime is 238643311. The reversal of 238643244 is 442346832.

238643244 is a `hidden beast` number, since 2 + 3 + 8 + 643 + 2 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 238643199 and 238643208.

It is not an unprimeable number, because it can be changed into a prime (238643243) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 473247 + ... + 473750.

It is an arithmetic number, because the mean of its divisors is an integer number (19150404).

Almost surely, 2^238643244 is an apocalyptic number.

It is an amenable number.

238643244 is an abundant number, since it is smaller than the sum of its proper divisors (450771300).

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

238643244 is a wasteful number, since it uses less digits than its factorization.

238643244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947014 (or 947009 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 238643244 is about 15448.0822110707. The cubic root of 238643244 is about 620.2732441100.

The spelling of 238643244 in words is "two hundred thirty-eight million, six hundred forty-three thousand, two hundred forty-four".