232345440 has 144 divisors (see below), whose sum is σ = 809984448. Its totient is φ = 60622848.

The previous prime is 232345439. The next prime is 232345493. The reversal of 232345440 is 44543232.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65964 + ... + 69396.

It is an arithmetic number, because the mean of its divisors is an integer number (5624892).

Almost surely, 2^232345440 is an apocalyptic number.

232345440 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 232345440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404992224).

232345440 is an abundant number, since it is smaller than the sum of its proper divisors (577639008).

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

232345440 is a wasteful number, since it uses less digits than its factorization.

232345440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 232345440 is about 15242.8816173321. The cubic root of 232345440 is about 614.7681854856.

Adding to 232345440 its reverse (44543232), we get a palindrome (276888672).

The spelling of 232345440 in words is "two hundred thirty-two million, three hundred forty-five thousand, four hundred forty".