128323560 has 32 divisors (see below), whose sum is σ = 384971040. Its totient is φ = 34219584.

The previous prime is 128323553. The next prime is 128323597. The reversal of 128323560 is 65323821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534562 + ... + 534801.

It is an arithmetic number, because the mean of its divisors is an integer number (12030345).

Almost surely, 2^128323560 is an apocalyptic number.

128323560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128323560 is an abundant number, since it is smaller than the sum of its proper divisors (256647480).

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

128323560 is a wasteful number, since it uses less digits than its factorization.

128323560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069377 (or 1069373 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 128323560 is about 11327.9989406779. The cubic root of 128323560 is about 504.3927085417.

The spelling of 128323560 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, five hundred sixty".