238140288 has 144 divisors (see below), whose sum is σ = 708959160. Its totient is φ = 76723200.

The previous prime is 238140283. The next prime is 238140299. The reversal of 238140288 is 882041832.

It is a happy number.

238140288 is a `hidden beast` number, since 238 + 140 + 288 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238140283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1577013 + ... + 1577163.

Almost surely, 2^238140288 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 238140288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354479580).

238140288 is an abundant number, since it is smaller than the sum of its proper divisors (470818872).

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

238140288 is a wasteful number, since it uses less digits than its factorization.

238140288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 238140288 is about 15431.7947109207. The cubic root of 238140288 is about 619.8371823591.

The spelling of 238140288 in words is "two hundred thirty-eight million, one hundred forty thousand, two hundred eighty-eight".