239728135 has 8 divisors (see below), whose sum is σ = 304595856. Its totient is φ = 180501120.

The previous prime is 239728133. The next prime is 239728183. The reversal of 239728135 is 531827932.

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

It is not a de Polignac number, because 239728135 - 2¹ = 239728133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239728133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410081 + ... + 1410250.

It is an arithmetic number, because the mean of its divisors is an integer number (38074482).

Almost surely, 2^239728135 is an apocalyptic number.

239728135 is a deficient number, since it is larger than the sum of its proper divisors (64867721).

239728135 is a wasteful number, since it uses less digits than its factorization.

239728135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820353.

The product of its digits is 90720, while the sum is 40.

The square root of 239728135 is about 15483.1564934286. The cubic root of 239728135 is about 621.2117603756.

The spelling of 239728135 in words is "two hundred thirty-nine million, seven hundred twenty-eight thousand, one hundred thirty-five".