128534000 has 80 divisors (see below), whose sum is σ = 355233216. Its totient is φ = 44064000.

The previous prime is 128533987. The next prime is 128534011. The reversal of 128534000 is 435821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9410 + ... + 18590.

Almost surely, 2^128534000 is an apocalyptic number.

128534000 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 128534000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177616608).

128534000 is an abundant number, since it is smaller than the sum of its proper divisors (226699216).

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

128534000 is an equidigital number, since it uses as much as digits as its factorization.

128534000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9211 (or 9195 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 128534000 is about 11337.2836252781. The cubic root of 128534000 is about 504.6682787013.

Adding to 128534000 its reverse (435821), we get a palindrome (128969821).

The spelling of 128534000 in words is "one hundred twenty-eight million, five hundred thirty-four thousand".