238828720 has 80 divisors (see below), whose sum is σ = 602898912. Its totient is φ = 87459840.

The previous prime is 238828679. The next prime is 238828729. The reversal of 238828720 is 27828832.

It is a happy number.

238828720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (238828729) 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, 135364 + ... + 137116.

Almost surely, 2^238828720 is an apocalyptic number.

238828720 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 238828720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301449456).

238828720 is an abundant number, since it is smaller than the sum of its proper divisors (364070192).

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

238828720 is a wasteful number, since it uses less digits than its factorization.

238828720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1904 counting only the distinct ones).

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

The square root of 238828720 is about 15454.0842498027. The cubic root of 238828720 is about 620.4338967593.

The spelling of 238828720 in words is "two hundred thirty-eight million, eight hundred twenty-eight thousand, seven hundred twenty".