128319000 has 64 divisors (see below), whose sum is σ = 400364640. Its totient is φ = 34217600.

The previous prime is 128318969. The next prime is 128319007. The reversal of 128319000 is 913821.

It is a super-2 number, since 2×128319000² = 32931531522000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128319007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18387 + ... + 24386.

Almost surely, 2^128319000 is an apocalyptic number.

128319000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128319000 is an abundant number, since it is smaller than the sum of its proper divisors (272045640).

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

128319000 is a wasteful number, since it uses less digits than its factorization.

128319000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42797 (or 42783 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 128319000 is about 11327.7976676846. The cubic root of 128319000 is about 504.3867339101.

The spelling of 128319000 in words is "one hundred twenty-eight million, three hundred nineteen thousand".