235740 has 24 divisors (see below), whose sum is σ = 660240. Its totient is φ = 62848.

The previous prime is 235723. The next prime is 235747. The reversal of 235740 is 47532.

It is a happy number.

235740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235747) by changing a digit.

235740 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 in 7 ways as a sum of consecutive naturals, for example, 1905 + ... + 2024.

It is an arithmetic number, because the mean of its divisors is an integer number (27510).

2²³⁵⁷⁴⁰ is an apocalyptic number.

235740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235740 is an abundant number, since it is smaller than the sum of its proper divisors (424500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

235740 is a wasteful number, since it uses less digits than its factorization.

235740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941 (or 3939 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 235740 is about 485.5306375503. The cubic root of 235740 is about 61.7747637349.

The spelling of 235740 in words is "two hundred thirty-five thousand, seven hundred forty".