238788220 has 48 divisors (see below), whose sum is σ = 549255168. Its totient is φ = 86480960.

The previous prime is 238788217. The next prime is 238788227. The reversal of 238788220 is 22887832.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238788227) 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, 55797 + ... + 59923.

It is an arithmetic number, because the mean of its divisors is an integer number (11442816).

Almost surely, 2^238788220 is an apocalyptic number.

238788220 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 238788220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274627584).

238788220 is an abundant number, since it is smaller than the sum of its proper divisors (310466948).

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

238788220 is a wasteful number, since it uses less digits than its factorization.

238788220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410 (or 4408 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 238788220 is about 15452.7738610257. The cubic root of 238788220 is about 620.3988242140.

The spelling of 238788220 in words is "two hundred thirty-eight million, seven hundred eighty-eight thousand, two hundred twenty".