128966000 has 40 divisors (see below), whose sum is σ = 311844624. Its totient is φ = 51585600.

The previous prime is 128965973. The next prime is 128966009. The reversal of 128966000 is 669821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128966009) 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, 30242 + ... + 34241.

Almost surely, 2^128966000 is an apocalyptic number.

128966000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128966000 is an abundant number, since it is smaller than the sum of its proper divisors (182878624).

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

128966000 is an equidigital number, since it uses as much as digits as its factorization.

128966000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64506 (or 64490 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 128966000 is about 11356.3198264226. The cubic root of 128966000 is about 505.2330395211.

The spelling of 128966000 in words is "one hundred twenty-eight million, nine hundred sixty-six thousand".