128325500 has 24 divisors (see below), whose sum is σ = 280263984. Its totient is φ = 51330000.

The previous prime is 128325481. The next prime is 128325521. The reversal of 128325500 is 5523821.

It is a self number, because there is not a number n which added to its sum of digits gives 128325500.

It is a congruent number.

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, 127826 + ... + 128825.

It is an arithmetic number, because the mean of its divisors is an integer number (11677666).

Almost surely, 2^128325500 is an apocalyptic number.

128325500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128325500 is an abundant number, since it is smaller than the sum of its proper divisors (151938484).

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

128325500 is a wasteful number, since it uses less digits than its factorization.

128325500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256670 (or 256658 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 128325500 is about 11328.0845688934. The cubic root of 128325500 is about 504.3952503377.

The spelling of 128325500 in words is "one hundred twenty-eight million, three hundred twenty-five thousand, five hundred".