235988 has 6 divisors (see below), whose sum is σ = 412986. Its totient is φ = 117992.

The previous prime is 235979. The next prime is 235997. The reversal of 235988 is 889532.

It is an interprime number because it is at equal distance from previous prime (235979) and next prime (235997).

It can be written as a sum of positive squares in only one way, i.e., 204304 + 31684 = 452^2 + 178^2 .

It is a super-2 number, since 2×235988² = 111380672288, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 235988.

It is an unprimeable number.

235988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29495 + ... + 29502.

It is an arithmetic number, because the mean of its divisors is an integer number (68831).

2²³⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

235988 is a deficient number, since it is larger than the sum of its proper divisors (176998).

235988 is a wasteful number, since it uses less digits than its factorization.

235988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59001 (or 58999 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 235988 is about 485.7859610981. The cubic root of 235988 is about 61.7964186262.

The spelling of 235988 in words is "two hundred thirty-five thousand, nine hundred eighty-eight".