238308928 has 84 divisors (see below), whose sum is σ = 558899568. Its totient is φ = 99939840.

The previous prime is 238308901. The next prime is 238308929. The reversal of 238308928 is 829803832.

It is a super-2 number, since 2×238308928² = 113582290329018368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238308929) 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 11 ways as a sum of consecutive naturals, for example, 117975 + ... + 119977.

Almost surely, 2^238308928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238308928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279449784).

238308928 is an abundant number, since it is smaller than the sum of its proper divisors (320590640).

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

238308928 is a wasteful number, since it uses less digits than its factorization.

238308928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 238308928 is about 15437.2577875735. The cubic root of 238308928 is about 619.9834612307.

The spelling of 238308928 in words is "two hundred thirty-eight million, three hundred eight thousand, nine hundred twenty-eight".