128546880 has 448 divisors, whose sum is σ = 533716992. Its totient is φ = 25436160.

The previous prime is 128546819. The next prime is 128546903. The reversal of 128546880 is 88645821.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2735017 + ... + 2735063.

Almost surely, 2^128546880 is an apocalyptic number.

128546880 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 128546880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266858496).

128546880 is an abundant number, since it is smaller than the sum of its proper divisors (405170112).

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

128546880 is a wasteful number, since it uses less digits than its factorization.

128546880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 128546880 is about 11337.8516483503. The cubic root of 128546880 is about 504.6851352278.

The spelling of 128546880 in words is "one hundred twenty-eight million, five hundred forty-six thousand, eight hundred eighty".