238189445 has 24 divisors (see below), whose sum is σ = 314647272. Its totient is φ = 172972800.

The previous prime is 238189439. The next prime is 238189447. The reversal of 238189445 is 544981832.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 210163009 + 28026436 = 14497^2 + 5294^2 .

It is not a de Polignac number, because 238189445 - 2⁴ = 238189429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238189396 and 238189405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238189447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49235 + ... + 53855.

It is an arithmetic number, because the mean of its divisors is an integer number (13110303).

Almost surely, 2^238189445 is an apocalyptic number.

It is an amenable number.

238189445 is a deficient number, since it is larger than the sum of its proper divisors (76457827).

238189445 is a wasteful number, since it uses less digits than its factorization.

238189445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713 (or 4700 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 238189445 is about 15433.3873469177. The cubic root of 238189445 is about 619.8798284262.

The spelling of 238189445 in words is "two hundred thirty-eight million, one hundred eighty-nine thousand, four hundred forty-five".