238972745 has 8 divisors (see below), whose sum is σ = 312837120. Its totient is φ = 173798320.

The previous prime is 238972733. The next prime is 238972759. The reversal of 238972745 is 547279832.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238972745 - 2⁶ = 238972681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238972745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2172425 + ... + 2172534.

It is an arithmetic number, because the mean of its divisors is an integer number (39104640).

Almost surely, 2^238972745 is an apocalyptic number.

It is an amenable number.

238972745 is a deficient number, since it is larger than the sum of its proper divisors (73864375).

238972745 is a wasteful number, since it uses less digits than its factorization.

238972745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344975.

The product of its digits is 846720, while the sum is 47.

The square root of 238972745 is about 15458.7433189118. The cubic root of 238972745 is about 620.5585886803.

The spelling of 238972745 in words is "two hundred thirty-eight million, nine hundred seventy-two thousand, seven hundred forty-five".