239128 has 16 divisors (see below), whose sum is σ = 455760. Its totient is φ = 117600.

The previous prime is 239119. The next prime is 239137. The reversal of 239128 is 821932.

It is an interprime number because it is at equal distance from previous prime (239119) and next prime (239137).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358 + ... + 778.

It is an arithmetic number, because the mean of its divisors is an integer number (28485).

2²³⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

239128 is a deficient number, since it is larger than the sum of its proper divisors (216632).

239128 is a wasteful number, since it uses less digits than its factorization.

239128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 494 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 239128 is about 489.0071574118. The cubic root of 239128 is about 62.0692947052.

The spelling of 239128 in words is "two hundred thirty-nine thousand, one hundred twenty-eight".