234640320 has 112 divisors (see below), whose sum is σ = 748893600. Its totient is φ = 62242816.

The previous prime is 234640313. The next prime is 234640321. The reversal of 234640320 is 23046432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234640321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223156 + ... + 224204.

It is an arithmetic number, because the mean of its divisors is an integer number (6686550).

Almost surely, 2^234640320 is an apocalyptic number.

234640320 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 234640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374446800).

234640320 is an abundant number, since it is smaller than the sum of its proper divisors (514253280).

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

234640320 is a wasteful number, since it uses less digits than its factorization.

234640320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 234640320 is about 15317.9737563426. The cubic root of 234640320 is about 616.7855834300.

Adding to 234640320 its reverse (23046432), we get a palindrome (257686752).

The spelling of 234640320 in words is "two hundred thirty-four million, six hundred forty thousand, three hundred twenty".