238221420 has 24 divisors (see below), whose sum is σ = 667020144. Its totient is φ = 63525696.

The previous prime is 238221413. The next prime is 238221421. The reversal of 238221420 is 24122832.

238221420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (238221421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985119 + ... + 1985238.

It is an arithmetic number, because the mean of its divisors is an integer number (27792506).

Almost surely, 2^238221420 is an apocalyptic number.

238221420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238221420 is an abundant number, since it is smaller than the sum of its proper divisors (428798724).

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

238221420 is a wasteful number, since it uses less digits than its factorization.

238221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970369 (or 3970367 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 238221420 is about 15434.4232156566. The cubic root of 238221420 is about 619.9075651306.

The spelling of 238221420 in words is "two hundred thirty-eight million, two hundred twenty-one thousand, four hundred twenty".