128455544 has 16 divisors (see below), whose sum is σ = 275262000. Its totient is φ = 55052352.

The previous prime is 128455511. The next prime is 128455571. The reversal of 128455544 is 445554821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128455498 and 128455507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146869 + ... + 1146980.

It is an arithmetic number, because the mean of its divisors is an integer number (17203875).

Almost surely, 2^128455544 is an apocalyptic number.

128455544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128455544 is an abundant number, since it is smaller than the sum of its proper divisors (146806456).

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

128455544 is a wasteful number, since it uses less digits than its factorization.

128455544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293862 (or 2293858 counting only the distinct ones).

The product of its digits is 128000, while the sum is 38.

The square root of 128455544 is about 11333.8230090292. The cubic root of 128455544 is about 504.5655761396.

The spelling of 128455544 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, five hundred forty-four".