128323260 has 288 divisors, whose sum is σ = 454970880. Its totient is φ = 29030400.

The previous prime is 128323253. The next prime is 128323333. The reversal of 128323260 is 62323821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2103630 + ... + 2103690.

It is an arithmetic number, because the mean of its divisors is an integer number (1579760).

Almost surely, 2^128323260 is an apocalyptic number.

128323260 is a gapful number since it is divisible by the number (10) 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 128323260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227485440).

128323260 is an abundant number, since it is smaller than the sum of its proper divisors (326647620).

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

128323260 is a wasteful number, since it uses less digits than its factorization.

128323260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 128323260 is about 11327.9856991435. The cubic root of 128323260 is about 504.3923154782.

The spelling of 128323260 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, two hundred sixty".