238822720 has 56 divisors (see below), whose sum is σ = 570183264. Its totient is φ = 95279616.

The previous prime is 238822709. The next prime is 238822721. The reversal of 238822720 is 27228832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238822721) 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, 166647 + ... + 168073.

It is an arithmetic number, because the mean of its divisors is an integer number (10181844).

Almost surely, 2^238822720 is an apocalyptic number.

238822720 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 238822720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285091632).

238822720 is an abundant number, since it is smaller than the sum of its proper divisors (331360544).

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

238822720 is a wasteful number, since it uses less digits than its factorization.

238822720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 238822720 is about 15453.8901251432. The cubic root of 238822720 is about 620.4287010769.

The spelling of 238822720 in words is "two hundred thirty-eight million, eight hundred twenty-two thousand, seven hundred twenty".