232440 has 64 divisors (see below), whose sum is σ = 756000. Its totient is φ = 56832.

The previous prime is 232439. The next prime is 232451. The reversal of 232440 is 44232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 1486 + ... + 1634.

2²³²⁴⁴⁰ is an apocalyptic number.

232440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 232440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378000).

232440 is an abundant number, since it is smaller than the sum of its proper divisors (523560).

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

232440 is a wasteful number, since it uses less digits than its factorization.

232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 232440 is about 482.1203169334. The cubic root of 232440 is about 61.4851573673.

Adding to 232440 its reverse (44232), we get a palindrome (276672).

The spelling of 232440 in words is "two hundred thirty-two thousand, four hundred forty".