128756000 has 48 divisors (see below), whose sum is σ = 316363320. Its totient is φ = 51500800.

The previous prime is 128755999. The next prime is 128756003. The reversal of 128756000 is 657821.

It can be written as a sum of positive squares in 4 ways, for example, as 26584336 + 102171664 = 5156^2 + 10108^2 .

It is not an unprimeable number, because it can be changed into a prime (128756003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12095 + ... + 20094.

Almost surely, 2^128756000 is an apocalyptic number.

128756000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128756000 is an abundant number, since it is smaller than the sum of its proper divisors (187607320).

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

128756000 is an equidigital number, since it uses as much as digits as its factorization.

128756000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32214 (or 32196 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 128756000 is about 11347.0701064195. The cubic root of 128756000 is about 504.9586607993.

The spelling of 128756000 in words is "one hundred twenty-eight million, seven hundred fifty-six thousand".