128545140 has 48 divisors (see below), whose sum is σ = 366726528. Its totient is φ = 33631104.

The previous prime is 128545121. The next prime is 128545169. The reversal of 128545140 is 41545821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 128545098 and 128545107.

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, 17032 + ... + 23391.

It is an arithmetic number, because the mean of its divisors is an integer number (7640136).

Almost surely, 2^128545140 is an apocalyptic number.

128545140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128545140 is an abundant number, since it is smaller than the sum of its proper divisors (238181388).

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

128545140 is a wasteful number, since it uses less digits than its factorization.

128545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40488 (or 40486 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 128545140 is about 11337.7749139767. The cubic root of 128545140 is about 504.6828580920.

The spelling of 128545140 in words is "one hundred twenty-eight million, five hundred forty-five thousand, one hundred forty".