235990 has 8 divisors (see below), whose sum is σ = 424800. Its totient is φ = 94392.

The previous prime is 235979. The next prime is 235997. The reversal of 235990 is 99532.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235997) by changing a digit.

235990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11790 + ... + 11809.

It is an arithmetic number, because the mean of its divisors is an integer number (53100).

2²³⁵⁹⁹⁰ is an apocalyptic number.

235990 is a deficient number, since it is larger than the sum of its proper divisors (188810).

235990 is a wasteful number, since it uses less digits than its factorization.

235990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23606.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 235990 is about 485.7880196135. The cubic root of 235990 is about 61.7965932008.

It can be divided in two parts, 235 and 990, that added together give a triangular number (1225 = T₄₉).

The spelling of 235990 in words is "two hundred thirty-five thousand, nine hundred ninety".